Displays an error message if an attempt to close a file failed.
Changes the maximum number of open files at startup to the number indicated in the button’s title. Dimmed because this feature is not available in System 7. (Note: System 7 automatically adjusts the maximum when necessary.)
Changes the value for the maximum number of open files. 40 is the minimum allowed; 348, the maximum. Dimmed because this feature is not available in System 7. (Note: System 7 automatically adjusts the maximum when necessary.)
Refers to the file’s type, such as “cdev” for control panel.
Refers to the ID of the directory (folder) which contains the file.
Refers to the space set aside when requested by a call to Allocate or Write after the end of file is reached.
Refers to the byte where the next read or write command will take place.
Refers to the last byte in the file’s allocation block plus one (because bytes are counted from zero).
Refers to the last byte in the file plus one (because bytes are counted from zero). Same as the size of the file and end of file.
Refers to the file’s first allocation block. Allocation blocks are means of managing disk space. This number should (it’s set to zero here, though) indicate which allocation block contains the file’s first bytes.
Refers to various information about the selected file. rd meaning read-only, rdwr meaning read-write; data meaning data fork open, res meaning resource fork open; noMod meaning no write pending, mod meaning write pending.
Refers to the file number. Apparently not used, it is not related to System 7’s file IDs.
Refers to the file reference number. It provides a means to access the selected file.
Refers to the volume reference number. It provides a means to access the volume where the selected file resides.
Closes the selected file in the list above. Dimmed because no file is selected or because the selected file is crucial to system operation.
To close the selected file in the list above, click this button.
This is a list of all the currently opened files on this Macintosh. Information about the selected file is displayed below.