Number formats can have at most 4 sections separated by ; (semicolon)
They are POSITIVE;NEGATIVE;ZERO;TEXT, respectively.
If the number is positive, first format is applied,
else if negative the second,
else if 0 the third,
else it's considered as text and the last formatting is applied.
You don't have to specify all four of them.
If only 1 format is specified it's used for every number.
If only 2 formats are specified, first part is used for positive and zeros, and second part is used for negatives.
If you want to skip some part(s) just use a semicolon for each and define the next part(s) following it(them).
Obviously, your formatting has all 4 sections.
_-* #.##0,00 TL_- for example this is for positives.
Since your Excel uses Turkish formatting
. (dot) is used as thousands separator and
, (comma) is used for percentages.
So if someone wrote 10000 1/2 your formatting will show it as 10.000,50 TL i.e. Ten thousand Turkish Liras and 50 Kuruş.
Other format specifiers in your code have the following meanings:
# Digit placeholder, skips insignificant 0s
0 Digit placeholder, adds extra insignificant 0s to fill the format
? Digit placeholder, adds spaces for insignificant 0s to align decimals
@ Text placeholder
_ Skips the width of the next character, generally used to align positive numbers with the negatives when negative numbers use a - (minus sign) or parentheses.
* Repeats the next character to fill the column width
Therefore POSITIVE "_-* #.##0,00 TL_-;" part of your code can be read as:
- _- skip the width of minus sign
- *(space) repeat blanks until column is filled
- #.##0,00 TL use "." as thousands separator, and "," as percentage
separator, remove them if any 0z are
written before the first digit. After
the comma take only two digits,
remove if more than two used, fill
them with 0s if less than two digits
used, finally add " TL" and once
again skip the width of -.
Your code already displays - before the negative digits, so if you want to add + before the positive values just add + before the first # in positive part of your code.