{{omit from|Befunge|No filesystem support}}
{{omit from|HTML}}
{{omit from|Locomotive Basic|Does not have a real time clock.}}
{{omit from|M4}}
{{omit from|Maxima}}
{{omit from|PARI/GP}}
{{omit from|Retro}}
{{omit from|TI-83 BASIC}} {{omit from|TI-89 BASIC}} <!-- Does not have a filesystem, just namespaced variables. -->
{{omit from|Axe}}
{{omit from|ZX Spectrum Basic|Does not have a real time clock.}}

;Task:
Get and set the modification time of a file.
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