Regular Expressions 101

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/
SPECGRID([\s\S]*?)\/
/
SPECGRID
matches the characters SPECGRID literally (case sensitive)
1st Capturing Group
([\s\S]*?)
Match a single character present in the list below
[\s\S]
*? matches the previous token between zero and unlimited times, as few times as possible, expanding as needed (lazy)
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
\S matches any non-whitespace character (equivalent to [^\r\n\t\f\v ])
\/ matches the character / with index 4710 (2F16 or 578) literally (case sensitive)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/

Test String