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

Snaps

Snaps ensure precise placement of points when you use the cursor.
For example, rather than enter coordinates or length to define the endpoint of a line, you can snap to the endpoint or midpoint of an existing line.
This Snap toolbar displays and controls running snaps. Local snaps can be used regardless of what running snaps are active.