D 2017-02-23T18:22:13.260
L :discard
N text/x-markdown
P c9f859b1aeb0d3708770048f5e870b0ede9b41b8
U akupries
W 451
Up: [Notes](wiki?name=Notes)

# :discard

Marks a L0 top-level symbol as discarded

 * IOW the marked symbol is treated as whitespace which is not passed to G1.
 * Usage of the symbol in G1 is a fatal error.
 * As is the symbol not being top-level (i.e. being used in some L0 RHS).

The clause can set an optional discard event for the symbol.

See also [discard default](wiki?name=discard+default) for the global discard event settings.

Z 2b86185f4f54535299ae94f3e5bcfc75