Persian-language text note whose title translates as meanings of abbreviations used in mobile phone schematic reading. The 5.34 KB plain .txt file opens in any text editor. Such a list explains the short labels found on phone schematics and boardviews, such as power rail, signal and component designations, which helps beginners follow circuits during repair. It is a general reference rather than a document tied to a specific phone model, so treat it as a study aid and cross-check any term against the actual schematic you are using.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematic_mobile5. Enginerys does not host this file.