To identify a filename extension as belonging to a certain application,
so that when you open any file with that extension, the correct
application is opened automatically.
For example, by default, Windows associates .BMP files with the
Paint application, and .htm files with the Internet-Explorer application.
Most Windows application installation procedures create associations.
For example, Exel for Windows creates an association for .XLS files,
while UltimateZip creates associations for files with the following
extensions: ACE, ARC, ARJ, BH, BZ2, CAB, ENC, GZ, HA, JAR, LHA,
LZH, PAK, PK3, PK_, RAR, TAR, TBZ, TBZ2, TGZ, UU, UUE, UZE, UZB,
WAR, XXE, Z, ZIP, ZOO. To open these archivetyps by Double clicking
UltimateZip must be propperly associated to them.
UltimateZip uses these associations when you Double Click on an
archive file listed in an Explorer window.