T-Mobile MDA III - Manual (Page 136)

T-Mobile MDA III User Manual 136
list the files in the Individual File screen.
New Archive... lets you create a new empty file with a filename extension of .zip. You can then
select Open Archive on the File Menu to open it in the Individual File screen, then use the Add
command on the Action Menu or Toolbar (in the Individual File screen) to compress and add
individual files to it. ZIP automatically compresses the files before adding them. The default com-
pression level is a compromise between speed and ratio of compression. This can be changed in
the Tools Menu > Options > Action tab. If you wish to select multiple files, you can use Action
Menu > Multi-Select Mode .
Select Archive Properties... to view information about the current archive file.
If the Individual File screen is currently displayed and you want to switch back to the Archive File
screen, select Find Archive on the File Menu or on the Toolbar.
Extracting (copying) files to another folder
The Extract command copies the selected file or files in the current open archive, then moves the
copy to the folder of your choice. Select the desired file(s), then tap Extract . The Extract screen
will open. Tap the Selected Files button to copy and move only the selected files, or tap All Files
to copy and move all files in the folder (regardless of whether specific files were selected prior
to tapping Extract...). If you wish to automatically overwrite any existing files that might have the
same name in the destination folder (without being prompted), check the Overwrite Existing
Files checkbox. If you do not check this checkbox, and files are found in the destination folder
with the same name, you will be asked to confirm. If the Apply Path checkbox is not checked,
the extracted files will be copied to the current folder. If the Apply Path checkbox is checked, ZIP
will create a new subfolder in which to place the extracted files. Tap the Extract button.
The Integrity Test command is used in ZIP to check and see if the data in all of the individual
files currently listed in the display area are correct. To obtain data reliability, ZIP uses a common
but powerful technique for error detection known as CRC (Cyclic Redundancy Check). The CRC
value, obtained by algorithm, is listed when you use Details view (if the CRC checkbox is checked
in the View tab of Options ). It doesn’t matter if there are any individual files currently selected
or not. When you tap Integrity Test , all files contained in the current archive will automatically
be tested for data correctness and reliability. A message will then appear and tell you whether
the file data is correct.
When the contents of an archive file is listed and it contains one or more subfolders, you can use
Show Folders on the View Menu to display the subfolder(s) as open or closed. When Show
Folders is active, only the subfolder name (and subfolder icon) will be shown in the file listing.
When Show Folders is not active, the subfolder name will not be shown in the file listing. In-
stead, the individual files within that subfolder will be listed along with any other files that might
be contained in the archive.