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XEDIT is a visual editor for VM/CMS using block mode IBM 3270 terminals. (Line-mode terminals are also supported.) XEDIT is much more line-oriented than modern PC and Unix editors. For example, XEDIT supports automatic line numbers, and many of the commands operate on blocks of lines. One of the features is a ''command line'' which allows the user to type arbitrary editor commands. Because IBM 3270 terminals do not transmit data to the computer until certain special keys are pressed (as , a program function key (PFK), or a program access key (PAK) ), XEDIT is less interactive than many PC and Unix editors. For example, continuous spell-checking as the user types is problematic. ==Typical screen layout==
Notable features of the screen layout: *The top line provides details about line format where: * *MOHICANS is the filename * *SCRIPT is the filetype * *A1 is the filemode (default, indicating which disk the file is on) * *V is the record format (RECFM) which can be Fixed or Variable * *132 is the length of the records (for V, the maximum length) * *Trunc=132 indicates changes beyond 132 columns will be ignored * *Size=10 denotes total number of lines in file * *Line=10 denotes the current line * *Col=1 denotes the current column * *Alt=10 indicates that ten changes have been made while XEDITing *The equal signs at the beginning of the lines provide space for line numbers if desired, and a place to enter XEDIT prefix commands that may operate on blocks of lines. *The next-to-bottom line is a command line for entering XEDIT or system (CP/CMS) commands or macros. *There is no mouse pointer because most IBM 3270 terminals did not have mice. *Most IBM 3270 terminals had 12 or 24 program function keys (PFKs) (and also two or three program assist keys), to which XEDIT commands or macros could be assigned. *XEDIT commands can be used to change the screen appearance. Some examples include: * *moving (or eliminating) the position of the command line * *moving (or eliminating) the TABS marker line * *moving (or eliminating) the position of the PREFIX lines * *moving (or eliminating) the current line indicator * *whether or not TAB characters are to be expanded * *define which lines to be displayed by scope (SELECT) * *showing the data on a display screen or typewriter mode * *specifying text(s) to be displayed on the screen (RESERVED) * *changing the prefix line from equal signs (=====) to line numbers (nnnnn) * *eliminating the TOFEOF lines ( * * * Top of File * * * --and-- * * * End of File * * *) * *displaying (or eliminating) SHADOW lines (indications that lines are not being displayed) * *displaying (or eliminating) the SCALE lines (a scale or ruler to assist editing) * *changing the background and foreground colors used for the different portions of the screen * *defining what lines are to be displayed (RANGE) * *define what columns are to be displayed (and also, if in hexadecimal, text, or both) * *define multiple XEDIT screens (location (over/under, side by side, combinations) ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「XEDIT」の詳細全文を読む スポンサード リンク
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