This most likely refers to the font weight expressed numerically. In CSS and modern font systems, numeric font weights range from 100 (thin) to 900 (black). A value of 700 corresponds to "bold." Alternatively, "version 700" could be metadata denoting a file release or internal version, but in plain font-selection contexts it’s commonly the weight.
For Arial specifically, the differences are minimal. But here is the rule: font arial normal opentype truetype version 700 western best
Pro tip: Modern versions of Arial on Windows 10/11 are actually TrueType-flavored OpenType files (.ttf). They work everywhere. This most likely refers to the font weight
Solution: You cannot type “über” or “François” with missing diacritics—except Arial Western includes those. But if you paste Cyrillic (Добрый день), Western will show blanks or tofu (□). Switch to Arial Cyrillic or Arial Unicode MS. Pro tip: Modern versions of Arial on Windows
Get: Arial.ttf (TrueType) or Arial.otf (OpenType) – Normal weight, Western charset.