Commodore VIC-20 - Page 61

LEN
Format: Abbreviation: Screen Display:
LEN(X$) None None
Action: Returns the number of characters in XS. Non-printing
characters and blanks are counted.
EXAMPLE:
10XS = "COMMODORE COMPUTER"
20 PRINT LEN (XS)
18
READY.
LOG
Format: Abbreviation: Screen Display:
LOG(X) None None
Action: Returns the natural logarithm of X. X must be greater than
zero.
EXAMPLE:
PRINT LOG (45/7)
1.86075234
READY.
MIDS
Format: Abbreviation: Screen Display:
MID$(X$, I[,J])
Action: Returns a string of length J characters from XS beginning
with the tth character. I and J must be in the range 0 to 255. If J [s
omitted or if there are fewer than J characters to the right of the Ith
character, all rightmost characters beginning with the Ith character
are returned. If l>LEN(X$)p MIDS returns a null string.