You can find any tool by the Menu Structure HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Menu+Structure
You can find the menu location of any tool by name HERE: https://turbocaddoc.atlassian.net/wiki/display/TC21UG/Tools+Mapped+to+Menus
Sketch
Creates a freehand drawing.
- Press and hold the mouse button to draw a freehand curve. Release the mouse when finished.
- As long as the tool is still active, you can continue drawing new curves.