Original sentence: As with single-byte extended ASCII codepages, support for non-English languages is done by filling in unused or under-used code points with characters for those languages, producing several incompatible EBCDIC extensions, most only allow up to two languages (English and one other language) to be used in a database or text file.Data portability between EBCDIC and ASCII systems is hindered by the fact that EBCDIC lower case alphabetic characters are lower in the collating sequence than upper case, and numerics are higher than both— the exact opposite of ASCII.This causes more trouble than the different code assignments, which are easily fixed with a lookup table
Edited sentence: , ASCII and EBCDIC both have one bit which indicates upper or lower case.As with single-byte extended ASCII codepages, most EBCDIC codepages only allow up to two languages (English and one other language) to be used in a database or text file.Data portability is hindered by the fact that EBCDIC lower case alphabetic characters are lower in the collating sequence than upper case, and numerics are higher than both— the exact opposite of ASCII.EBCDIC has no technical advantage or disadvantage compared to ASCII-based code pages such as the ISO-8859 series or Unicode.There are some technical niceties in each, e.Unlike ASCII the EBCDIC alphabet is non-contiguous and is interleaved with some non alphabetic characters