42S local label caching

[Joe Horn]

In the "HP-42S Hex Table" article referenced above (HPX Exchange, V1 N6 P12), I wrote:

"The HP-42S uses exactly the same hex table as the HP-41 for the internal representation of user-written program functions. ... Even global labels and ENDs are the same internally. There are the same one-and two-byte LBLs, RCLs and STOs..."

One exception to code equality between the 41 and 42S was discovered by Tom Cadwallader (cf. end of above article): The 41 adds a non-packable null between sequential numbers in program memory, but the 42S adds a null after ALL numbers, not just between them. This will result in most 42S programs being slightly larger than their 41 equivalent.