The X
按字母分类：
extension name file type Classification
ABW AbiWord Document text file
ACT FoxPro Documenting Wizard Action Diagram text file
ADOC AsciiDoc File text file
AIM AIMMS ASCII Model File text file
ANS ANSI Text File text file
APKG Exported Anki Flashcard Deck text file
APT Almost Plain Text File text file
ASC Autodesk ASCII Export File text file
ASC ASCII Text File text file
ASCII ASCII Text File text file
ASE Autodesk ASCII Scene Export File text file
ATY Association Type Placeholder text file
AWP Ability Write Template text file
AWT AbiWord Template text file
AWW Ability Write Document text file