THE ANSWER DO-ES APPEAR TO BE THAT [ FULL-WIDTH ] TEXT WAS INVENT-D TO COMPLY WITH ( STANDARD-S THAT WERE TYPOGRAPH-IC-AL ) THAT ( LANGUAGE-S THAT ORIGINAT-D FROM WITH-IN ASIA ) DO UTILIS-E , WHERE-AS , THE ( ( TEXT OF THE QUESTION THAT WAS QUOT-D PREVIOUS-LY ) THAT IS MONO-SPACE-D ) DO-ES EXIST BECAUSE OF THE REQUIRE-MENT OF ( LETTER-S THAT ARE MONO-SPACE-D ) FOR ( OPERAT-ION-S THAT ARE MATHEMAT-IC-AL ) , AS USAGE OF ONLY MONO-SPACE-D TEXT AND ( ARAB-IC NUM-ERAL-S ) DURING CALCULAT-ION OF ( OPERATION-S THAT ARE MATHEMAT-IC-AL ) DO-ES ENSUR-E THAT ALL TEXT DO-ES ALIGN CORRECT-LY