Jump to label and continue execution.
Syntax goto word word is filename and command-substituted to yield a string of the form `label'. The shell rewinds its input as much as possible, searches for a line of the form `label:', possibly preceded by blanks or tabs, and continues execution after that line.
“Diplomacy is being able to tell someone to go to hell in such a way that they look forward to the trip” ~ Anon
for - Loop, expand words, and execute commands
while - Execute commands.