Correct. It is listable and editable, but if you edit it, after exiting TEXT you will end up with line 6553 instead with a 0 in it:

6553 0 PRINT"Yea!"

Also, for lins 65531-65535, it appears a 00H in a string causes issues: ?SN Error in 17186

Other codes 01H - 1FH seem to work, at least the ones I tried.

Ken

On 6/4/18 6:34 PM, John R. Hogerhuis wrote:

On Mon, Jun 4, 2018 at 6:21 PM Ken Pettit <[email protected] <mailto:[email protected]>> wrote:

    Hey John,

    Very interesting.  It looks like the range is actually 65531-65536
    that are invisible.  They don't even show up with a full program
    edit.  You can't GOTO or GOSUB to them, but you can put "65529
    REM" and then GOSUB 65529.  Then BASIC will execute the invisible
    lines.  Very nice!  Then you could safely emed ANY ML in strings
    within those lines it appears.


Haha. Bitchin’ :-)

So I guess line 65530 is listable you just can’t create a line 65530 interactively?

— John.

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