goto - command transfer
https://etsh.nl/history/man/_goto.1.html [etsh.nl]
2019-04-24 22:39
Goto is allowed only when the Shell is taking commands from a file. The file is searched from the beginning for a line beginning with `:’ followed by one or more spaces followed by the label. If such a line is found, the goto command returns. Since the read pointer in the command file points to the line after the label, the effect is to cause the Shell to transfer to the labelled line.
source: grugq