You have different takeoff drawing tools, each represented
by an icon on the Takeoff sub-tool bar. Different tools will be appropriate
for different situations.
For information about "finishing" using a tool, see Takeoff Finishing Tools.
COUNT:
the 
cursor is used when the Count function is active. Use to digitize count
items, like fixtures, switches or valves. Simply click once on the appropriate
spot on your plans to add a count item. See Count.
HOME
RUN: Use 
to measure an entire conduit run, but "hide" the line so as
not to clutter the drawing. For example, if you have an electrical run
back to the breaker panel, you can use the Segmented Line (or Line 90
or Counts, etc.) to draw the line to the panel- including any drops, then
take off the line. Complete the Home Run and the symbol will display in
its place.
Select the Home Run symbol you want to use in Digital Takeoff > System Preferences > Colors & Tools tab.
When using the Home Run option, Estimating defaults to using the Segmented Line, but you can select any drawing tool you prefer.
To complete the Home Run:
Click the Home Run icon from the tool bar.
If you are currently drawing an annotation, right-click and select Finish & Complete Home Run.
If you are not currently drawing an annotation, right-click and select Complete Home Run.
LINE: this allows you to digitize a straight line. Click the starting point of the line, then move the cursor to the end point of the line and click again. See Line.
90 (DEGREE ANGLE): this allows you to draw a 90-degree angle between two points. Click the starting point of the line, then move the cursor to form the desired right angle, then click again. See 90-Degree Angle.
SEGMENTED LINE: this allows you to create a line with multiple angles. Click the starting point of the line, then move the cursor to the point of the desired angle line and click again. When done, right-click and choose one of the finishing options. See Segmented Line.
CURVED LINE: this allows you to create a line that curves. Click the starting point of the line, then move the cursor to form thedesired curve. When done, right-click and choose one of the finishing options. See Curved Line.
FREE-HAND TRACE: this allows you to draw shapes without any aid in forming shapes. To begin, click and hold the left mouse button. You can now trace out any shape you desire. When done, right-click and choose one of the finishing options. See Free Hand Trace.
TEXT: this allows you to add text notations to your plans. To use it, click on the spot on your plans where you wish to add text. Type the appropriate text in the Text Properties box and click OK. See Text.