COMLOGS



Including this correction from the Dec'83 issue.

"Odd things in Comlogs

"Since sending you my program Comlogs, which you published in October,

"I have discovered some odd things which can happen after a number of

"repeats and rub-outs have been used.  They can be remedied by the

"following corrections:

"  Lines 450-530: substitute j$ for i$ throughout.

"  Line 444 should read: 

" 444 IF ff THEN LET g$="  "+g$(m TO)

"  Line 962 should read:

" 962 IF ff THEN LET g$=g$(6 TO)

"David Bye, Saffron Walden, Essex



David Bye of Saffron Walden, Essex, has written a version of the

language LOGO for the 48K Spectrum. Commands should be entered as two

letters and then a positive or negative number. In the instructions

given the number is represented by an "n" in brackets.



Drawing commands:

rl (n)  draws right to left

rl (-n) draws left to right

ud (n)  draws vertically up

ud (-n) draws vertically down

du (n)  draws diagonally up & right

du (-n) draws diagonally up & left

dd (n)  draws diagonally down & right

dd (-n) draws diagonally down & left



Cursor commands:

ca (n)  moves cursor right

ca (-n) moves cursor left

cu (n)  moves cursor up

cu (-n) moves cursor down



Utility commands:

st      stops the program or a repeat

hm      homes the cursor

cs      clears the screen, retaining the stream

rs      resets

rp      enables repeat

ru      erases last command