ascii extension造句

The main principle is that the declaration shall be encoded in pure ASCII, and therefore ( if the declaration is inside the file ) the encoding needs to be an ASCII extension.
Consequently, a byte string can contain non-ASCII extension, but not characters in encodings such as UTF-16 ( even though a 16-bit code unit might be nonzero, its high or low byte might be zero ).
The now generally recommended method of supporting international characters is through UTF-8, which is stored in char arrays, and can be written directly in the source code if using a UTF-8 editor, because UTF-8 is a direct ASCII extension.
Even more importantly, forward compatibility is ensured as software that recognizes only 7-bit ASCII characters as special and does not alter bytes with the highest bit set ( as is often done to support 8-bit ASCII extensions such as ISO-8859-1 ) will preserve UTF-8 data unchanged.
It's difficult to find ascii extension in a sentence. 用ascii extension造句挺难的