Official ivars — Leo 6.7.2 documentation

# Official ivars

The c, g and p objects give Leo scripts access to all parts of Leo and Leo outlines. There are many official ivars (instance variables) that scripts may use. Here are a few:

c.frame is an object representing the actual parts of Leo screen.

For any frame, frame.c is the frame’s commander, so c.frame.c is always c.

g.app is the object representing the entire Leo application.

The ivars of g.app represent Leo’s global variables.

p.v is the vnode at position p.

A vnode represents an outline node. Vnodes hold most of the data in Leo outlines. For any vnode v, v.h is the node’s headline, and v.b is the node’s body text.

p.h and p.b are synonyms for p.v.h and p.v.b.

Because of clones, a vnode may appear in several positions in a traversal.