# EPOC OPL Guide & Reference Glossary

## Index L

Term | Topic | Meaning | See Also
label | OPL Basics | A marker in an OPL program. Labels can be jumped to with `GOTO` or `VECTOR`. |
Linked by ordinal | Using OPXs | Refers to using DLLs in which functions are looked up by an ordinal (1, 2, 3, .... n) number rather than by name or physical offset. Ordinal linking makes better use of disk space than linking by name, and is more robust than linking by physical offset. | DLL
literal | OPL Basics | A value written directly into the text of an OPL program. | string, integer, long integer, floating-point, array
little-endian | Advanced Topics | Denotes a format for multi-byte values where the byte with the smallest memory address is the least significant — the value is stored little-end-first. The opposite of little-endian is, naturally enough, big-endian. The name comes from the Lilliputian dispute over whether an egg should be opened at the round or pointed end from Swift’s Gulliver’s Travels. |
logical operator | OPL Basics | An operator which takes logical arguments, and evaluates to a logical value. | logical value
logical value | OPL Basics | True or false. To OPL, 0 represents false, and anything else represents true. OPL uses -1 to return a true value, but any non-zero value is valid. |
long integer | OPL Basics | A 32-bit signed integer value. | value, integer