EDT interprets input in L mode as a statement if
the first character other than a blank is the EDT statement symbol (default value:
@) or a user statement symbol for an external statement routine (see @USE statement)and the second character other than a blank is not identical to the first character that is not a blank.
If EDT recognizes a statement then it is executed immediately.
In the next two paragraphs, the term statement symbol is used to refer to both the EDT statement symbol and the user statement symbol.
All input in which the first character other than a blank is not a statement symbol is interpreted as a record and is stored unchanged in the current line. In interactive mode, empty input which is sent with[F1] instead of [DUE] causes an empty line (line of length 0) to be stored in the current line (see section “Function keys in L mode”).
Input in which the first two characters other than blanks are statement symbols are also interpreted as records but are subject to special processing:
The characters located before the second statement symbol (which can only be blanks or the first statement symbol), are removed.
This special processing simplifies the creation of procedures in L mode (see also section “EDT procedures”). The input is not immediately executed as a statement but is stored as a statement and can therefore be subsequently run as many times as necessary.
Examples
Input
| Interpretation Statement Statement Record, the value ’ Record, the value ’ Record, the value ’ Record, the value ’ |