SHOW
stackThe SHOW
function makes visible some levels of the stack which were previously hidden by a call to HIDE
.
The levels made visible are the ones closest to the top of the stack. Depending on the levels
parameter to the call to SHOW
, the revealed levels could be the whole stack (levels
== 0), a maximum number of levels (levels
>= 0) or a number of levels such that there are at most a certain number ((abs(levels
)) with levels
< 0) of visible levels after the call.
When called with NULL
as parameter, SHOW
wil reveal all levels currently hidden.