HP 250 - Page 63

Keyboard Operations
The cursor indicates the specific character in error. In this
case, a two-digit number must be entered for the year.
When you have entered the appropriate number, the cursor
indicates the next line is ready for entry.
You may at some time misspell a command. The RUN command, for
example, must be spelled exactly as shown:
RUN
and followed by pressing the ENTER key in order for the current
program in memory to be executed. If you had typed:
RUIN
the computer would interpret RUIN as an illegal part of an
expression:
RUIN
IMPROPER EXPRESSION
This is an example of a syntax error, which is an error in the
structure of a statement or command. Syntax errors result most
often from misspelling or misplaced punctuation.
4-6
Keyboard Operations
The cursor indicates the specific character in error. In this
case, a two-digit number must be entered for the year.
When you have entered the appropriate number, the cursor
indicates the next line is ready for entry.
You may at some time misspell a command. The RUN command, for
example, must be spelled exactly as shown:
RUN
and followed by pressing the ENTER key in order for the current
program in memory to be executed. If you had typed:
RUIN
the computer would interpret RUIN as an illegal part of an
expression:
RUIN
IMPROPER EXPRESSION
This is an example of a syntax error, which is an error in the
structure of a statement or command. Syntax errors result most
often from misspelling or misplaced punctuation.
4-6