Houdini 20.5 HScript commands

opchange HScript command

Search and replace text in parameter values.

On this page

opchange [-t type_pattern] [-T network_type] [-n name_pattern] [-N fullpath_pattern] [-p path] [-s] [-i] from_string to_string

Searches all parameters of operators matching the given criteria for ‹from_string›. If found, it is replaced with the ‹to_string›.


-t ‹type_pattern

Changes operators whose type matches ‹type_pattern›.

-T ‹network

Changes operators of ‹network_type› (see optype for information on network types).

-n ‹name_pattern

Changes operators with names matching ‹name_pattern›.

-N ‹fullpath_pattern

Changes operators with full paths matching ‹fullpath_pattern›.

-p ‹path

Start searching from this path in the operator hierarchy. If you don’t specify a path, the search begins at the root (/).


(Silent) Do not print the list of changes.


Normally, ‹from_string› only matches whole words (for example, string “myobj” would not match value “myobj1”. You can use the -i flag to make the string match word substrings.


opchange plastic constant

Would change the word plastic to the word constant wherever it is found.

opchange -n geo* plastic constant

Find all operators whose name begins with geo, changing the word plastic to the word constant.

opchange -t light plastic constant

Find all operators of type light, changing the word plastic to the word constant.

opchange -T SHOP plastic constant

Find all SHOPs, changing the word plastic to the word constant.

opchange -p /obj plastic constant

Find all operators under /obj, changing the word plastic to the word constant.

See also

HScript commands

  • alias

    Creates an alias for a command or sequence of commands.

  • appendseq

    Appends a series of files to the current sequence in mplay.

  • atjob

    Execute commands at a future time.

  • audiopanel

    Changes parameters of the audio pane.

  • autosave

    Enables/disables auto saving.

  • bonealigncapture

    Aligns the capture and animation (deform) regions.

  • boneconvert

    Updates bones from old Houdini 4 hip files.

  • bonefixchops

    Cleans up any references to a bone in InverseKin CHOPs before you delete the bone.

  • bonemoveend

    Adjusts the length and angles of the given bone object so that the bone would end at the given position in the rest chain.

  • bookmark

    Add, list, or remove bookmarks.

  • break

    Breaks out of the current loop.

  • bundlelist

    Allows different options of a bundle list pane to be set.

  • chadd

    Adds channels to the objects specified.

  • chalias

    Create an alias for a channel name.

  • animeditor

    Sets various options of the animation editor.

  • chanlist

    Sets various options of the channel list.

  • chautoscope

    Changes autoscope property of parameters (automatically scope when object is selected).

  • chautoselect

    Changes autoselect property of parameters (automatically select in channel list when object is selected).

  • chblockbegin

    Signals the start of a block of chadd/chkey commands in a script file.

  • chblockend

    Signals the end of a block of chadd/chkey commands in a script file.

  • chcommit

    Commits pending key changes.

  • chcp

    Copies the contents of one channel to another.

  • chgadd

    Creates one or more channel groups.

  • chgls

    Lists channel groups.

  • chgop

    Sets the contents of a channel group.

  • chgpopulate

    Populates a channel group with a node’s channels.

  • chgrm

    Removes channel groups

  • chhold

    Puts channels into hold or pending state.

  • chkey

    Edits or inserts a key.

  • chkeyget

    Samples channels at given times and returns key information.

  • chkeyls

    List key times for channels.

  • chkeymv

    Moves keys in channels to different frames/times

  • chkeyrm

    Removes keys in the specified channels at different frames/times

  • chlock

    Locks parameters so they can’t be modified.

  • chls

    Lists channels.

  • chopexportmap

    Manipulates CHOP export mapping overrides.

  • chopls

    Lists the tracks in a chop operator.

  • chopscope

    Assigns CHOP channels to available viewers by pairing CHOP paths with CHOP channels.

  • chopview

    Sets various CHOP viewer options.

  • chread

    Reads channel data from a file.

  • chrefit

    Refits the channels using cubic interpolation.

  • chrename

    Renames a channel.

  • chreverse

    Reverse the channel data over a given range.

  • chrm

    Removes a channel

  • chround

    Moves or replaces keys so that they lie on integer frame values.

  • chscope

    Sets the channel scope.

  • chstretch

    Stretches out animation on channels.

  • chwrite

    Writes channel data out to a .chan or .bchan file.

  • clear

    Clears the textport.

  • closeport

    Closes a communication port created by the openport command.

  • cmdread

    Runs the commands in a specified file.

  • colladaimport

    Imports a COLLADA (1.4.0) file.

  • colorsettings

    Changes the gamma and/or LUT on various UI gadgets.

  • commandecho

    Enables or disables the echoing of commands.

  • compfree

    Releases all cached data and images in use by all composite networks.

  • compopts

    Controls compositing cache usage and threading.

  • compproject

    Controls the current compositing project.

  • continue

    Skips to the end of a loop iteration.

  • cplane

    Changes construction plane parameters.

  • datatree

    Sets the current plugin used by a data tree pane.

  • desk

    Reconfigures pane layouts.

  • dopdatahint

    Adds hints for DOP networks to validate simulations.

  • dopdatatypealias

    Creates an alias for a DOP data type.

  • dopdatatypes

    Prints a list of available DOP data types.

  • dopsave

    Saves the entire state of a DOP simulation to a file.

  • dopsavedata

    Saves a DOP simulation data item to a file.

  • dopsolveadddata

    Adds data to a DOP object when running a Script Solver DOP.

  • dopsolvecopydata

    Copies some DOP data from one location to another when running a Script Solver DOP.

  • dopsolveremovedata

    Removes data from a DOP object when running a Script Solver DOP.

  • dopsolvesetoption

    Sets a value on a piece of DOP data when running a Script Solver DOP.

  • dsedit

    Built-in alias for otedit.

  • dsoinfo

    Displays paths of plug-in functions and operator types.

  • dsreload

    Reloads all OPs which are based on scripts.

  • echo

    Prints text to the textport.

  • else

    Else conditional for an if statement.

  • end

    Termination of a for or foreach statement.

  • endif

    Termination of the if statement.

  • excat

    Prints expression source code.

  • exedit

    Opens expressions in an editor.

  • exhelp

    Shows usage information for an expression.

  • exit

    Stops execution of the script file. If the optional status code is provided, then it sets the variable 'status' to the given integer.

  • exls

    Lists the current expression functions

  • exread

    Load custom expression source code from external files.

  • exrm

    Removes custom expressions.

  • fbximport

    Imports a Filmbox FBX file.

  • fbximportanim

    Imports a single Filmbox FBX animation curve.

  • fcur

    Gets or sets the current frame number.

  • fdependadd

    Adds a file dependency.

  • fdependhide

    Hides a file dependency.

  • fdependls

    Lists all file dependencies.

  • fdependrm

    Removes a file dependency.

  • filechooser

    Opens a file chooser and prints the chosen file.

  • for

    Loops through a block of commands according to a counter.

  • foreach

    Loops through a block of commands for each item in a list.

  • fplayback

    Sets various options of the playbar.

  • fps

    Gets or sets the current playback speed.

  • frange

    Sets the playback range on the playbar.

  • fset

    Sets the playback range to a certain length

  • ftimecode

    Gets or sets the current frame in timecode format.

  • geocache

    Manipulates the internal geometry cache.

  • geospreadsheet

    Sets various options of a Geometry Spreadsheet pane.

  • glcache

    Manipulates the OpenGL caches.

  • help

    Prints usage help for a command.

  • helpbrowser

    Performs actions related to the help browser pane.

  • history

    Prints the command history.

  • if

    Conditionally executes a block of commands if a condition is true.

  • imgdispopt

    Sets the global image viewer display options.

  • imgsave

    Writes images from a Composite View or MPlay to disk

  • imgview

    Changes global options of a COP/Mplay image viewer.

  • imgview2d

    Changes options of a 2D view of a COP image viewer.

  • imgviewhist

    Changes options of a Histogram view of a COP image viewer.

  • imgviewls

    Prints the names of available COP/Mplay image viewers to use with imgview.

  • imgviewtime

    Changes options of a Timeline view of a COP image viewer.

  • imgviewtool

    Invokes a tool in a COP image viewer (or lists available tools).

  • iprview

    Sets various options of an IPR view pane.

  • job

    Get or set the $JOB variable.

  • kinconvert

    Updates old hip files to new IK structure.

  • linker

    Sets various options of the light linker.

  • listchooser

    Presents a graphical interface to the user to choose from a list of options.

  • loadaudio

    Load, unload, and set options for audio.

  • loadseq

    Loads a sequence of files into mplay.

  • matrman

    Generate a RenderMan sl file from a shader.

  • matupdateref

    Updates all the Palette material references.

  • memory

    Prints current memory usage.

  • menurefresh

    Reloads the contents of the OPmenu.xml, PARMmenu.xml, ParmGearMenu.xml and CHGmenu.xml menu files.

  • message

    Presents text to the user.

  • mnew

    Resets the session.

  • mplayfit

    Fits the mplay window to the image (at 100%).

  • mplayhome

    Fits mplay image to the viewport size.

  • mplayprofile

    Sets the current mplay profile.

  • mread

    Loads a hip file.

  • mwrite

    Save the current session to a hip file.

  • nbadd

    Create network boxes

  • nbalpha

    Set alpha of network boxes

  • nbcolor

    Color network boxes

  • nbcp

    Copy network boxes

  • nbget

    Get network box flag information

  • nbglob

    Pattern expansion for network box names

  • nblocate

    Locate and move network boxes

  • nbls

    List network boxes

  • nblsop

    Lists operators contained in network boxes

  • nbname

    Renames a network box

  • nbop

    Sets the contents of a network box.

  • nbrm

    Deletes network boxes

  • nbset

    Set network box flags.

  • nbsize

    Resizes network boxes

  • netcolumns

    Sets the visible columns in the network editor’s list mode.

  • neteditor

    This command is no longer used.

  • netviewdep

    This command is no longer used.

  • networkeditor

    Sets various options of the network editor.

  • nextkey

    Moves playback to the next or previous key.

  • nodegraph

    This command is no longer used.

  • objcache

    Manipulates the internal object transformation cache.

  • objcleantransform

    Zeroes transforms on an object.

  • objextractpretransform

    Transfers an object’s pre-transform values to its local transforms.

  • objkinoverride

    Sets the kinematic override option.

  • objlightlink

    Manages object light category selection in a light-centric way.

  • objmaterial

    Manages object-local overrides of material parameters.

  • objparent

    Controls the keep position when parenting option.

  • objpretransform

    Sets or displays an object’s pre-transform matrix.

  • objresetpretransform

    Resets the given object’s pre-transform values to the identity matrix.

  • ombind

    Binds a handle to an operator parameter.

  • ombindinfo

    Lists parameters bound to an operator’s handle.

  • omls

    Lists the available handles for an operator type.

  • omparm

    Changes a handle’s settings.

  • omsbind

    Binds an operator parameter to a selector

  • omsbindinfo

    Lists the selectors bound to an operator.

  • omsls

    Lists the available selectors for an operator type.

  • omsunbind

    Removes bindings between operators and selectors.

  • omswhere

    Lists the operators bound to a selector.

  • omunbind

    Removes bindings between an operator and a handle.

  • omwhere

    Lists the operators bound to a handle.

  • omwrite

    Writes out all handle and selector bindings to a file.

  • opadd

    Adds an operator to the network.

  • opalias

    Allows an operator type to be created using an alternate name.

  • opautoplace

    Autoplaces a node tile within a network.

  • opbadd

    Creates operator bundles.

  • opbfilters

    Lists all valid filters for bundles.

  • opbls

    Lists bundles.

  • opbname

    Renames a bundle.

  • opbop

    Modifies operator bundles.

  • opbrm

    Removes operator bundles.

  • opcf

    Changes to a different folder in the operator hierarchy.

  • opchange

    Search and replace text in parameter values.

  • opchangetype

    Changes an operator to a new type.

  • opchmod

    Changes the access permissions of operators.

  • opcollapse

    Collapses nodes into a subnetwork.

  • opcolor

    Gets or sets an operator’s tile color in the network editor.

  • opcomment

    Gets or sets a comment string for an operator.

  • opcook

    Tells (or forces) an object to re-cook.

  • opcopy

    Copies an operator and its dependencies to the clipboard.

  • opcp

    Copies an operator to a new place in the operator hierarchy.

  • opdefaultcolor

    Changes the initial color of a node when it is put down.

  • opdefaultshape

    Changes the initial shape of a node when it is put down.

  • opdelscript

    Gets or sets a script to run when an operator is deleted.

  • opdepend

    Lists all operator dependencies of a node.

  • opdeprecate

    Marks node types as deprecated and hides them from the tab menu.

  • openport

    Opens a communication port to Houdini.

  • opeventscriptcache

    Manipulates the internal event script path cache used to avoid excessive searching of the HOUDINI_SCRIPT_PATH.

  • opexclude

    Deletes operator types from the current Houdini session.

  • opexprlanguage

    Gets or sets the default expression language for the specified nodes.

  • opextern

    Shows all/missing external references in a node.

  • opextract

    Expands a subnetwork

  • opfind

    Find operators that match a set of criteria.

  • opfirstname

    Changes the initial name of a node when it is put down.

  • opgadd

    Creates a new operator group.

  • opget

    Gets operator properties.

  • opgetinput

    Gets the node attached to a certain input of an operator.

  • opglob

    Expands a pattern into a list of operator names.

  • opgls

    Lists operator groups.

  • opgop

    Controls membership of operator groups

  • opgrm

    Removes an operator group from the current network.

  • ophelp

    Displays help for an operator or operator type.

  • ophide

    Hides nodes from the tab menu.

  • opinfo

    Displays information about the operator, including the comment.

  • opinputstring

    Associates a string value with a particular input index and key name.

  • oplayout

    Automatically lays out operators in the network editor.

  • oplegacyinputs

    Specifies input names for legacy nodes that were saved only with input numbers.

  • oplocate

    Gets/sets the X/Y coordinates of operator tiles in the network view.

  • opls

    Lists operators in the network hierarchy.

  • opmenu

    Shows the items of a menu parameter on an operator.

  • opmultiparm

    Gets or sets multiparm channel linking information for a node.

  • opname

    Renames an operator.

  • oporder

    Changes the user-defined order of operators.

  • opoverride

    Temporarily Override an operator with another existing operator. The overrides are not saved.

  • oppane

    Show an editor for an operator.

  • opparm

    Gets/sets/manipulates parameters on a node.

  • oppaste

    Paste data copied with opcopy into a network.

  • oppresetload

    Loads channels and parameter values into an operator from a preset.

  • oppresetloadfile

    Loads channels and parameter values into an operator from a .preset file.

  • oppresetls

    Lists the presets available for an operator.

  • oppresetrm

    Removes a preset.

  • oppresetsave

    Saves channels and parameter values from an operator as a preset.

  • oppresetsavefile

    Saves channels and parameter values from an operator to a .preset file.

  • opproperty

    Creates spare properties from a set of pre-defined properties

  • oppwf

    Prints the current folder in the network hierarchy.

  • opramp

    Sets a key in an operator’s ramp.

  • opread

    Loads an operators file created with opwrite.

  • oprename

    Changes the name that appears on toolbars to represent an operator type.

  • oprm

    Deletes operators.

  • oprmtype

    Deletes operators of a specific type.

  • opsave

    Saves the output data of an operator to a file.

  • opscale

    Obsolete. Use neteditor -v instead.

  • opscript

    Prints the commands necessary to recreate an operator.

  • opset

    Turns various operator flags on or off.

  • opspare

    Add, remove or list spare parameters in an operator.

  • opspareds

    Sets the dialog script describing spare parameters on one or more nodes.

  • opstat

    Print node creation time, modification time, author, and permissions.

  • optype

    Prints type-specific information about operators.

  • optypeinstall

    Built-in alias for optyperead

  • optyperead

    Loads an .optype archive and installs the contained type into a Houdini directory.

  • optypeuninstall

    Removes all references to an operator.

  • opunhide

    Makes operators accessible in the toolbars.

  • opunload

    Causes a node to throw away any cached geometry.

  • opunwire

    Disconnects inputs from an operator.

  • opupdate

    Re-cooks operators if their referenced files have changed.

  • opuserdata

    Provides access to name/value pair data that can be set on a node.

  • opwire

    Connects the output of one operator to the input of another.

  • opwrite

    Saves operators to a file.

  • otcollapse

    Create an operator type library from separate files.

  • otcomment

    Gets/sets the comment text associated with an operator type.

  • otconfig

    Sets various options of the operator type manager.

  • otcontentadd

    Adds a file to an existing operator type definition.

  • otcontentdelete

    Removes data from an operator type definiton.

  • otcontentls

    Lists all sections in an operator type definition.

  • otcontentsave

    Extracts a file from inside an operator type definition.

  • otcopy

    Copies data from inside one HDA file to another.

  • otcreatecompiledtypefrom

    Creates a new operator type definition from a subnet.

  • otcreatetypefrom

    Creates a new operator type definition from a subnet.

  • otdelete

    Deletes operator definitions from an operator type library.

  • otedit

    Opens a property editor for an operator type.

  • otexpand

    Splits an operator type library into component files.

  • otgetotl

    Determines whether/where an operator type is defined.

  • otglob

    Lists operator types matching a pattern.

  • otinuse

    Helps determine what Operator Type Libraries are in a given Hip file.

  • otload

    Loads an operator type library into the current session.

  • otls

    Lists operator types defined in a library file.

  • otmerge

    Copies all operator type definitions from one library file to another.

  • otprefer

    Get/set which type definition to use when multiple implementations are available.

  • otrefresh

    Reloads an operator type library from disk.

  • otrenamesource

    Gives a descriptive name to a library source.

  • otsync

    Syncs the contents of nodes with the contents of their type definitions.

  • ottouch

    Sets the last modified time for an operator type definition.

  • otunload

    Unloads an operator type library.

  • otunsync

    Built in alias for otsync -u.

  • otversion

    Gets/sets the version of an operator type definition.

  • otwrite

    Saves an operator type into an operator type library file.

  • pane

    Creates, closes, or sets options on a pane.

  • panepath

    Sets the current node of all panes in a desk.

  • parmeditor

    Sets various options of a parameter editor.

  • parmlist

    Sets various options of the parameter list within a channel list gadget.

  • parmsheet

    Sets various options of the parameter spreadsheet.

  • pathmap

    Interface to modify or test the HOUDINI_PATHMAP variable.

  • perfmon

    Enable output from the performance monitor.

  • performance

    Set various options of the performance monitor.

  • pilist

    Sets various options of a handle list.

  • play

    Controls playback.

  • pomadd

    Creates a new persistent handle or group.

  • pomattach

    Attaches an operator to a handle, or a handle to a group.

  • pomclear

    Detaches all operators from a persistent handle, or clears a group.

  • pomdetach

    Detaches an operator from a persistent handle, or a handle from a group.

  • pomls

    Lists persistent handles or handle groups.

  • pomparm

    Changes settings of a handle.

  • pomremove

    Delete a persistent handle or handle group.

  • pomrename

    Renames a persistent handle or handle group.

  • pomscript

    Prints the commands to create a persistent handle or group.

  • pomset

    Sets the display flags of a persistent handle or group.

  • preference

    Gets/sets the general preference option values.

  • prependseq

    Inserts files before the current sequence.

  • prompt

    Change the textport prompt string.

  • propertyedit

    Built-in alias for otedit

  • python

    Execute Python statements.

  • pythonpanel

    Performs actions related to the Python panel pane.

  • quit

    Exits Houdini.

  • radial

    Controls radial settings.

  • read

    Reads a line on user input into one or more variables.

  • reloadseq

    Updates any images which may be out of date since they were loaded.

  • render

    Cause an output driver (ROP node) to render.

  • rexport

    Edits exprot variables for a network render.

  • rkill

    Stop or pause/unpause a render.

  • ropview

    Sets various options of an Outputs viewer pane.

  • rps

    Lists background render processes.

  • scenegraphopts

    Internal command to save display settings for the scene graph view

  • scenegraphrenderopts

    Internal command to save renderer options for the scene graph view

  • scenegraphtree

    Sets various options of a Scene Graph Tree pane.

  • sceneviewconfig

    Internal command to save display settings for the scene graph view

  • sceneviewpurpose

    Internal command to save display settings for the scene graph view

  • seqls

    Lists the sequences currently loaded in Mplay.

  • set

    Sets a local variable.

  • setcomp

    Set the color components to display.

  • setenv

    Sets a global variable.

  • setplane

    Sets the current plane.

  • shelfdock

    Adds shelves to and removes shelves from the shelf area (dock).

  • shift

    Shifts the contents of the command line argument variables.

  • shopconvert

    Converts RenderMan shaders to native.

  • shoppromote

    Automatically promotes all parameters from a material’s contained shaders onto the material.

  • shopthumb

    Generates a thumbnail image (shader ball) for a material.

  • shopvisible

    Show or hide shaders based on the renderer.

  • sopcache

    Manipulates the internal surface node cache.

  • sopcreateedit

    Create an Edit SOP from the differences between two SOPs.

  • source

    Executes the script commands in a file.

  • stampdirty

    Dirty nodes dependent on a stamping variable..

  • system

    Starts a host system command.

  • takeadd

    Creates a new take.

  • takeautomode

    Sets the take auto-include mode.

  • takeinclude

    Includes parameters in or removes parameters from the current take.

  • takelist

    Sets various options of the take list pane.

  • takeload

    Loads take information from a file saved with the takesave command.

  • takels

    Prints the names of existing takes.

  • takemerge

    Merges included parameters from one or more source takes into a destination take.

  • takemove

    Moves a take under a new parent.

  • takename

    Rename a take, set the label of a take, or change the default basename for new takes.

  • takerm

    Removes one or more takes.

  • takesave

    Saves take information to a file, or prints it to the textport.

  • takescript

    Prints the commands necessary to recreate a take.

  • takeset

    Switches to a different take.

  • tcur

    Gets or sets the current time.

  • test_access

    On Windows, tests the permission of a file path.

  • texcache

    Manipulates the internal texture cache.

  • time

    Print the time taken to execute a command.

  • timeslice

    Sets timeslice options for timesliced channel operators.

  • tmgadd

    Creates time groups.

  • tmgls

    Lists time groups.

  • tmgname

    Renames a time group.

  • tmgop

    Set, add to, or delete the contents of a time group.

  • tmgrm

    Deletes a time group.

  • tmgshift

    Shift a time group by a length of time or number of frames.

  • toolbar

    Creates, edits, or removes a toolbar.

  • topcancel

    Cancels a cooking TOP network

  • topcook

    Cooks the specified TOP node(s) or network(s)

  • topdirty

    Dirties the specified TOP node(s) or network(s)

  • treechooser

    Presents a graphical interface to the user to choose from a list of options.

  • treecontrol

    Sets various options of the tree contrl.

  • tset

    Gets/sets the global animation range.

  • ucd

    Change the UNIX working directory.

  • uls

    Returns a list of files and directories in the UNIX working directory. This command is non-recursive.

  • umkdir

    Creates a new directory, dir_name, in the file system.

  • undoctrl

    Turns undo on or off, or clears undo memory.

  • unitlength

    Controls the Houdini Unit Length option.

  • unitmass

    Controls the Houdini Unit Mass option.

  • unix

    Starts a host system command.

  • updateui

    Waits for Houdini’s UI to update.

  • upwd

    Prints the Unix working directory.

  • urm

    Unlinks file_name, in the file system. This method cannot unlink directories.

  • varchange

    Cooks any operators using changed variables.

  • version

    Prints the application’s version.

  • vexinfo

    Lists the currenly loaded VEX functions.

  • vexprofile

    Turns profiling of VEX functions on/off

  • viewagentopts

    Set various crowd agent display options for a viewport.

  • viewbackground

    Sets general options for the viewport background.

  • viewcamera

    Make a viewport look through a camera.

  • viewcharacteropts

    Set various character display options for a viewport.

  • viewcolor

    Set the color override attribute in a particular viewport.

  • viewcopy

    Copies settings from one viewport or view-memory to another.

  • viewdisplay

    Set various options of a viewport or view-memory.

  • viewdispopts

    Set various options of a viewport.

  • viewdispset

    Set various options of a viewport. Replaces viewdisplay.

  • vieweffect

    Controls viewport settings.

  • viewergrouplist

    Set group list options of viewer panes.

  • viewerinspect

    Gets/sets inspection options for a viewer.

  • vieweroption

    Sets various options for viewer panes.

  • viewerstow

    Stows or unstows components of a viewer.

  • viewforeground

    Controls viewport foreground image settings.

  • viewhome

    This command allows you to home the named viewports.

  • viewinfotext

    Set info text options for a viewport.

  • viewlayout

    Rearranges viewports in a viewer pane.

  • viewlight

    Controls viewport settings.

  • viewls

    Lists all viewer panes.

  • viewmaskoverlay

    Sets various options of the view mask overlay in viewports.

  • viewname

    Renames a viewport

  • viewonionskin

    Set various onion skinning display options for a viewport.

  • viewoptadd

    Adds display options to all viewers.

  • viewoptenable

    Enable/disable user options in a particular viewport.

  • viewoptls

    Lists options available in viewers.

  • viewoptname

    Renames a display option.

  • viewoptrm

    Removes display options from all viewers.

  • viewoptset

    Gets/sets the settings for a particular display option. These settings are shared by all viewers.

  • vieworthogrid

    Controls display of the grid in an orthographic viewport.

  • viewposteffects

    Controls viewport post-process effects settings.

  • viewprojection

    Sets the projection method of a perspective viewport.

  • viewrefplane

    Changes reference plane parameters.

  • viewroto

    Sets image and position options for the viewport background.

  • viewrotovideo

    Sets the options for video file viewport backgrounds.

  • viewsnapshot

    Manages the view snapshot memory.

  • viewsnapshotoption

    Sets the options for the view snapshot memory.

  • viewtool

    Sets the current tool in a scene viewer (or lists available tools).

  • viewtransform

    Gets/sets projection data for a viewport.

  • viewtype

    Changes the type of a viewport.

  • viewupdate

    Controls the updating of views.

  • viewuvgrid

    Sets various options of the grid in UV texture viewports.

  • viewwrite

    Creates a flipbook from a viewport.

  • vopforcecompile

    Forces a VOP Network to compile its code.

  • vopwritevfl

    Writes code generated from a VOP network to a file.

  • while

    Loops through a block of commands while a condition is true.