Universal Identifiers [ICL George 3]

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====== Universal Identifiers ======

A universal identifier is a string of up to 11 alphanumeric characters of which the first letter is in the range A to L. A universal identifier may be defined at any point in the program after #CORE and must be unique.

However, the exception to this are universals whose names begin with D and L, these cannot be defined as the compiler will itself assign values to such identifiers as follows:
  * Whenever #SEGMENT is compiled, and identifier D//segment// is defined whose value is the program file address of the segment, that is the address of the backing store area where it will be stored.
  * Whenever #END is compiled at the end of a new segment, an identifier L//segment// is defined whose value is the length in words of the segment.
Links to universal identifiers starting with: [[index-uidA|A]]
[[index-uidB|B]]
[[index-uidC|C]]
[[index-uidE|E]]
[[index-uidF|F]]
[[index-uidG|G]]
[[index-uidH|H]]
[[index-uidI|I]]
[[index-uidJ|J]]
[[index-uidK|K]]