modified/clarified some help & usage messages

[bamtools.git] / src / toolkit / bamtools_index.cpp

diff --git a/src/toolkit/bamtools_index.cpp b/src/toolkit/bamtools_index.cpp
index b1e4bc3e00eaf6fd359b35fc081d6147b4ecb0ae..90339c4fe3b4de9ccb6f59a634f2c23831f426e2 100644 (file)
--- a/src/toolkit/bamtools_index.cpp
+++ b/src/toolkit/bamtools_index.cpp
@@ -51,7 +51,7 @@ IndexTool::IndexTool(void)
     // set up options 
     OptionGroup* IO_Opts = Options::CreateOptionGroup("Input & Output");
     Options::AddValueOption("-in", "BAM filename", "the input BAM file", "", m_settings->HasInputBamFilename, m_settings->InputBamFilename, IO_Opts, Options::StandardIn());
-    Options::AddOption("-bti", "create (non-standard) BamTools index file", m_settings->IsUsingBamtoolsIndex, IO_Opts);
+    Options::AddOption("-bti", "create (non-standard) BamTools index file (*.bti). Default behavior is to create standard BAM index (*.bai)", m_settings->IsUsingBamtoolsIndex, IO_Opts);
 }
 
 IndexTool::~IndexTool(void) {