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<TITLE>SDF 2.001: SDF Reference: Miscellaneous Variables</TITLE>
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<H1>13.5. Miscellaneous Variables</H1>
<HR>
<H2><A NAME="Purpose">Purpose</A></H2>
<P>These variables are generally useful.</P>
<HR>
<H2><A NAME="Interface">Interface</A></H2>
<TABLE CLASS="columns" BORDER>
<TR CLASS="heading">
<TD>
<STRONG>Name</STRONG>
</TD>
<TD>
<STRONG>Type</STRONG>
</TD>
<TD>
<STRONG>Purpose</STRONG>
</TD>
</TR>
<TR CLASS="group">
<TD>
<STRONG>Characters:</STRONG>
</TD>
<TD>
<STRONG>&nbsp;</STRONG>
</TD>
<TD>
<STRONG>&nbsp;</STRONG>
</TD>
</TR>
<TR>
<TD>
c
</TD>
<TD>
string
</TD>
<TD>
copyright character
</TD>
</TR>
<TR>
<TD>
tm
</TD>
<TD>
string
</TD>
<TD>
trademark character
</TD>
</TR>
<TR>
<TD>
rtm
</TD>
<TD>
string
</TD>
<TD>
registered trademark character
</TD>
</TR>
<TR>
<TD>
nbsp
</TD>
<TD>
string
</TD>
<TD>
non-breaking space
</TD>
</TR>
<TR CLASS="group">
<TD>
<STRONG>Environment:</STRONG>
</TD>
<TD>
<STRONG>&nbsp;</STRONG>
</TD>
<TD>
<STRONG>&nbsp;</STRONG>
</TD>
</TR>
<TR>
<TD>
SDF_VERSION
</TD>
<TD>
string
</TD>
<TD>
product version string (e.g. 2.000 beta1)
</TD>
</TR>
<TR>
<TD>
SDF_HOME
</TD>
<TD>
string
</TD>
<TD>
library/configuration directory
</TD>
</TR>
<TR CLASS="group">
<TD>
<STRONG>Expression formats:</STRONG>
</TD>
<TD>
<STRONG>&nbsp;</STRONG>
</TD>
<TD>
<STRONG>&nbsp;</STRONG>
</TD>
</TR>
<TR>
<TD>
FORMAT_UPPER
</TD>
<TD>
string
</TD>
<TD>
convert a string to uppercase
</TD>
</TR>
<TR>
<TD>
FORMAT_LOWER
</TD>
<TD>
string
</TD>
<TD>
convert a string to lowercase
</TD>
</TR>
<TR>
<TD>
FORMAT_FULL
</TD>
<TD>
string
</TD>
<TD>
format to a complete date-time format
</TD>
</TR>
<TR>
<TD>
FORMAT_TIME
</TD>
<TD>
string
</TD>
<TD>
format to a time only
</TD>
</TR>
<TR>
<TD>
FORMAT_DATE
</TD>
<TD>
string
</TD>
<TD>
format to a date only
</TD>
</TR>
<TR>
<TD>
FORMAT_CONCISE
</TD>
<TD>
string
</TD>
<TD>
format to a concise date only
</TD>
</TR>
<TR>
<TD>
FORMAT_YEAR
</TD>
<TD>
string
</TD>
<TD>
format to a 4-digit year
</TD>
</TR>
</TABLE>

<HR>
<H2><A NAME="Description">Description</A></H2>
<P>The <EM>character</EM> variables are the preferred way of including the respective symbols. A format-specific configuration file can override the default definitions of these symbols.</P>
<P>The <EM>environment</EM> variables can be used to find out which version of SDF is executing and where it is installed.</P>
<P>The <EM>expression format</EM> variables define bits of Perl code to format variables or expressions. They can be defined in a configuration file - your system adminstrator may wish to configure date formatting to suit local conventions.</P>
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