[#BloombergLP-balcl-CommandLine-printUsage-0f1]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balcl.adoc[balcl]::xref:BloombergLP/balcl/CommandLine.adoc[CommandLine]::printUsage
:relfileprefix: ../../../
:mrdocs:

Print usage to the specified `errorStream`, describing what the command line should look like.

== Synopsis

Declared in `<balcl_commandline.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
printUsage(std::ostream& errorStream) const;
----


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