Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

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Develop > Programming Guide > System Language reference > List: rtecalls > rtecall("isalpha") function

rtecall("isalpha") function

A RAD function that verifies that a string contains only alphabetic characters or only alphabetic characters and the non-alphabetic characters provided.

Function

rtecall("isalpha")

Format

$L.success.flag= rtecall ($L.fnc.name, $L.return.code, $L.str, $L.chars)

Parameters

The following parameters are valid for the rtecall("isalpha") function:

Parameter	Data type	Description
$L.success.flg	Logical	Indicates whether or not the function was successful.
$L.fnc.name	String	The name of the sub-function to call, in this case "isalpha".
$L.return.code	Number	Provides a more detailed return code.
$L.str	String	The string to be checked.
$L.chars	String	An optional comma-delimited string of non-alphabetic characters to allow.

Factors

If the $L.success.flg is false, the function failed. If it is true, the function succeeded.

Example

 $L.success.flag=true
 $L.return.code=0
 $L.str=name in $L.file
 $L.chars=" "
 $L.success.flag=rtecall("isalpha", $L.return.code, $L.str, $L.chars)

Results:

When name in $L.file="my name" $L.success.flag is true.
When name in $L.file="my first name" $L.success.flag is true.
When name in $L.file="my 1st name" $L.success.flag is false.

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