Run file to be executed (i.e. "$.!Boot.!Run" in Acorn pathname syntax). The manifest file is always stored at the pathname META-INF/manifest.xml. The file is identified by a pathname supplied as a single argument. Thus people could type "command arguments" rather than "sh pathname/command arguments". Each sequence of consecutive arrows is implicitly assigned a pathname (cf. Another was the pathname separator, "&colon;" in Mac OS, but many Unix utilities assumed "/". Makes encoding depend on the full pathname. Use a complete pathname (no search is done).