Programming in XPCE/Prolog: Section 2.7

## 2.7 Notation

This manual, as well as all other XPCE documentation both printed and online uses some notational conventions. Instead of speaking of `the send-method colour of class box', we write

> `box`->`colour'

Similar, instead of `the get-method height of class window', we write

> `window`<-`height'

In some cases, the arguments and/or the return type of the method are specified:

> `box`->`colour: colour'
> `window`<-`height -->int'