[libreoffice-l10n] Change in the documentation of the Format function (LO BASIC)

Hello,

I noticed that in documentation of the Format function, the name of the
first parameter had been changed from "Number" to "expression". (Starts
around
https://translations.documentfoundation.org/translate/libo_help-master/textsbasicshared/bg/?checksum=b7bf473e14ccdc22,
tens of strings are affected).

Why this change? The Format function does not convert an *expression* to a
string, it actually does convert a *number*; Format (1 + 2 + 3) returns
"6", not "1 + 2 + 3". It does not care about how the number is produced
before being passed to it. The next segments mention things like "if
*expression* contains a digit in this position" and "where *expression*
appears in the *format* code" which do not make sense; the thing that
contains a digit at position X to be formatted is the *number* produced by
the expression and being formatted by the function; the expression itself
cannot appear anywhere in the format code.

If we mean this naming to convey the idea that any argument to any function
call may be the result of an expression nested in the call, we should
change all arguments of all functions to read "numeric_expression",
"start_date_expression", "format_code_expression", etc. It appears to me
that a better solution would be to have a general explanation about nesting
expressions on an introductory page about programming in Basic.

If the reader is unfamiliar with basic programming concepts, either name
may confuse them: "number" may be misunderstood to mean only literal
numbers (1, 7.68, .78E5) and "expression" may be misunderstood to mean that
the function actually formats expressions. If the reader is familiar with
nesting expressions in function calls, they would expect the parameter name
to denote the role of the respective value in the calculation, not the way
it may be produced before passing it to the function.

As a quick fix, maybe changing the parameter to something like
"numericvalue" (following the latest convention of "all lowercase, no
spaces/underscores" for the parameter names) would be slightly better than
both "number" and "expression"?

Best regards,
Mihail

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