^                 #    Match only if at start of string (or line)
    [ ]+              #    Match any of the listed characters, one-or-more times (as many as possible)
    Pin               #    Match a literal sequence ("Pin")
    :                 #    Match a literal ':' character
    [ ]*              #    Match any of the listed characters, zero-or-more times (as many as possible)
    (                 #    The start of a capturing block ($1)
      [^\.]*          #      Match any character not listed, zero-or-more times (as many as possible)
    )                 #    The end of $1
    \.                #    Match a literal '.' character
    (                 #    The start of a capturing block ($2)
      [^ ]*           #      Match any character not listed, zero-or-more times (as many as possible)
    )                 #    The end of $2
    [ ]*              #    Match any of the listed characters, zero-or-more times (as many as possible)
    out               #    Match a literal sequence ("out")