画面節の概要
A Screen Description entry specifies the attributes, behavior, size and location for a referenced screen item which is accepted or displayed at run time.
AUTO 句
The AUTO clause automatically terminates an ACCEPT operation of the screen item when the last character position is keyed. No explicit terminator key is necessary.
BACKGROUND-COLOR 句
The BACKGROUND-COLOR clause specifies the background color of the screen item.
BELL 句
The BELL clause causes an audible alarm to occur each time the item containing the clause is displayed.
BLANK 句
The BLANK clause clears a line of a screen or the whole screen before a screen item is displayed.
BLANK WHEN ZERO 句 - 画面節内
The BLANK WHEN ZERO clause causes the blanking of a screen item when its value is zero.
BLINK 句
The BLINK clause causes the screen item to blink when it appears on the screen.
COLUMN 句
The COLUMN clause specifies the column at which the screen item starts on the screen.
CONTROL 句
The CONTROL clause allows attributes associated with a Screen Section item to be defined at run time.
ERASE 句
The ERASE clause clears part of the line or the screen starting at the cursor position.
FOREGROUND-COLOR 句
The FOREGROUND-COLOR clause specifies the foreground color of the screen item.
FROM 句
The FROM clause identifies the source of data for display.
FULL 句
The FULL clause specifies that the operator must either leave the screen item completely empty or fill it entirely with data.
GRID 句
The GRID clause causes each character of the screen item to have a vertical line on its left-hand side when the item appears on the screen. Each line is within the character-position.
HIGHLIGHT 句
The HIGHLIGHT clause causes the screen item to appear in high intensity mode when it appears on the screen.
JUSTIFIED 句 - 画面節内
The JUSTIFIED clause specifies non-standard positioning of data within a screen item when data is either moved to it or entered into it.
LEFTLINE 句
The LEFTLINE clause causes the leftmost character of the screen item to have a vertical line on its left-hand side when the item appears on the screen. The line is within the character-position.
LINE 句
The LINE clause specifies the line at which the screen item starts on the screen.
LOWLIGHT 句
The LOWLIGHT clause specifies that the field is to appear on the screen with the lowest intensity.
OCCURS 句 - 画面節内
The OCCURS clause eliminates the need for separate entries for repeated screen items and supplies information required for the application of subscripts or indices.
OVERLINE 句
The OVERLINE clause causes every character of the screen item to have a horizontal line above it when the item appears on the screen. The line is within the character-position.
PICTURE 句 - 画面節内
The PICTURE clause describes the length, general characteristics and editing requirements of a screen item.
PROMPT 句
The PROMPT clause causes the empty character positions in the screen item to be marked on the screen during an ACCEPT operation while the system is ready to accept operator-keyed data into that item.
REQUIRED 句
The REQUIRED clause specifies that the operator must not leave the screen item empty.
REVERSE-VIDEO 句
The REVERSE-VIDEO clause causes the screen item to be displayed in reverse-video.
SECURE 句
The SECURE clause prevents operator-keyed data from appearing on the screen.
SIGN 句 - 画面節内
The SIGN clause specifies the position and representation of the operational sign.
SIZE 句
The SIZE clause specifies the current size of the screen item.
TO 句
The TO clause identifies the destination of data accepted.
UNDERLINE 句
The UNDERLINE clause causes the screen item to be underlined when it appears on the screen.
USAGE 句 - 画面節内
The USAGE clause specifies the format of a data item in the computer storage.
USING 句
The USING clause identifies the source of data for display.
VALUE 句 - 画面節内
The VALUE clause specifies literal information for display on the screen.
ZERO-FILL 句
The ZERO-FILL clause causes trailing prompt characters to be replaced by zeros instead of spaces.