Microsoft KB Archive/38004

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{| 2.x 3.00 4.00 4.0a 5.00 | 2.20 2.21 3.00 WINDOWS                | OS/2 kbusage The information in this article applies to:
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 * Microsoft Excel for Windows, versions 2.x, 3.0, 4.0, 4.0a, 5.0
 * Microsoft Excel for OS/2 versions 2.2, 2.21, and 3.0

SYMPTOMS
When entering the following function macro, Excel generates an &quot;Error in Formula&quot; message when the ENTER key is pressed at the last line:

A1: =ARGUMENT(&quot;a&quot;) A2: =ARGUMENT(&quot;b&quot;) A3: =ARGUMENT(&quot;c&quot;) A4: = a + b  A5: = c + a       <<<=== &quot;Error in Formula&quot;

CAUSE
This error message occurs because the lowercase and uppercase letters &quot;R&quot; and &quot;C&quot;, are reserved characters; these characters are used in RC referencing so they cannot be used as variables. &quot;R&quot; and &quot;C&quot; are the only two single characters that are reserved.
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Last reviewed: November 4, 1994

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