|-
| &1d
| 16-bit BASIC program line memory address pointer(see notes)
|-
| &1e
e.g. "|DIR". An RSX is encoded in a BASIC program using the following structure:
#*When a BASIC program is in memory, the BASIC ROM can replace "16-bit BASIC program line number" tokens with "16-bit BASIC program line memory address pointer".
When a program is loaded or saved, there will only be "16-bit BASIC program line number" tokens followed by a 16-bit number of the line.
When a program is running, BASIC will replace the "16-bit BASIC program line number" with the "16-bit BASIC program line memory address pointer" token, and replace the 16-bit line number with the memory address of the start of that line.
It does this to avoid having to lookup the address of the line each time.
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