Hi, Can anybody tell me how to add new nodes and tools into TAB menu?

The TAB menu is actually just a different representation of the Shelf. So just create a new shelf tool. You can then control it's visibility in the tool's Context options.

PS. Some more info on building tools can be found here:
http://www.sidefx.com/index.php?option=com_content&task=view&id=966&Itemid=265 [sidefx.com]

edward
The TAB menu is actually just a different representation of the Shelf. So just create a new shelf tool. You can then control it's visibility in the tool's Context options.

PS. Some more info on building tools can be found here:
http://www.sidefx.com/index.php?option=com_content&task=view&id=966&Itemid=265 [sidefx.com]

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Thank you edward