The many uses of @ in PicoLisp

The AT-mark @ is everywhere in PicoLisp source code, and sometimes it is not obvious, at least for beginners, what the meaning of @ in the context at hand is.

Here is a list that summarizes all uses of @ in PicoLisp, giving examples and explanations, as well as links to related docs with more information. It is probably necessary to read the docs first to understand the compact information in the list. This summary serves only as a quick overview, helping to find out the context and meaning of an otherwise mysterious @ mark in some PicoLisp code.

All (?) possible uses of @ with examples and explanations

03jan19    abu