Module path 

One path statement: \draw[->, thick] (A) -- (B) node[midway, above] {$F$} -- cycle;.

Constants

MAX_COORDINATE

Largest accepted coordinate, in cm (one kilometer): beyond that it is a typo or a bad computation.

MAX_DECORATION_STEPS

Cap on decoration steps per segment.

MAX_GRID_LINES

Cap on grid lines in each direction.

Functions

absolute_coordinate

The content of ( … ) in canvas coordinates.

statement

Runs a path statement, already without its command (\draw) and with macros expanded.

style

Path style from the (already expanded) options, with the command’s default.

tip