View source for Template:System Variables

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! colspan="10" |[[System Variables]] (A value may be assigned to these except for <apll>⎕DM</apll>)
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{{SSV|ALX }}
{{SSV|CT  }}
{{SSV|DL  }}
{{SSV|DM  }}
{{SSV|ELX }}
{{SSV|FC  }}
{{SSV|FEATURE}}
{{SSV|FPC}}
{{SSV|IC }}
{{SSV|IO }}
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{{SSV|LX }}
{{SSV|PP }}
{{SSV|PR }}
{{SSV|PW }}
{{SSV|RL }}
{{SSV|SA }}
{{SSV|WSID}}
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! colspan="10" | [[Niladic]] [[System Functions]]  (a value cannot be assigned to these)
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{{SSF|A  }}
{{SSF|AV }}
{{SSF|EM }}
{{SSF|ET }}
{{SSF|LC  }}
{{SSF|NNAMES}}
{{SSF|NNUMS }}
{{SSF|SYSID }}
{{SSF|SYSVER}}
{{SSF|TC    }}
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{{SSF|TCBEL }}
{{SSF|TCBS  }}
{{SSF|TCESC }}
{{SSF|TCFF  }}
{{SSF|TCHT  }}
{{SSF|TCLF  }}
{{SSF|TCNL  }}
{{SSF|TCNUL }}
{{SSF|TS    }}
{{SSF|WA    }}
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! colspan="10" |   [[Monadic]] or [[dyadic]] system functions (a value cannot be assigned to these)
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{{SSF|AT      | Attributes}}
{{SSF|CR      | Canonical representation}}
{{SSF|DR      | Data representation}}
{{SSF|EA      | Execute alternate}}
{{SSF|EC      | Execute controlled}}
{{SSF|ERROR   | Signal error}}
{{SSF|ES      | Event simulate}}
{{SSF|EX      | Expunge names}}
{{SSF|FMT     | Format}}
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{{SSF|FX      | Function fix}}
{{SSF|MF      | Monitor function}}
{{SSF|NAPPEND | Append data to an open native file}}
{{SSF|NC      | Name classification}}
{{SSF|NCREATE | Create and open a native file}}
{{SSF|NERASE  | Erase an open native file}}
{{SSF|NL      | Name list}}
{{SSF|NREAD   | Read data from an open native file}}
{{SSF|NRENAME | Rename an open native file}}
{{SSF|NREPLACE| Replace data in an open native file}}
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{{SSF|NRESIZE | Resize an open native file}}
{{SSF|NSIZE   | Get the size of an open native file}}
{{SSF|NTIE    | Open a native file}}
{{SSF|NUNTIE  | Close a native file}}
{{SSF|TF      | Transfer form}}
{{SSF|UCS     | Universal character set}}
{{SSF|VR      | Vector representation of a function}}                  
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! colspan="10" |Note that quad functions and variables are case insensitive
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