That is saying something completely different. My contention is that to the uninformed

• @+ and $LAST_MATCH_END
• $? and $CHILD_ERROR
• $^C and $COMPILING
• $^T and $BASETIME
• $^I and $INPLACE_EDIT
• $" and $LIST_SEPARATOR

are all obscure. If you don't know that Perl has a list separator concept, the name $LIST_SEPARATOR leaves you to look everywhere for its meaning. I would not know $^I's meaning, but by understanding the naming convention, I know it is a token defined in perlvar; in some cases that may be enough to guess/remember its meaning because I don't need to consider concepts that come from the

• problem, -- is $LIST_SEPARATOR part of user output
• general programming, -- or is it about a data structure
• host system, -- or is it about porting
• or a specialty domain. -- or a bit of arcana from some lib

Be well
rir

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