diff -Nurp prt-get-5.15/src/argparser.cpp prt-get-5.15-sha256/src/argparser.cpp
--- prt-get-5.15/src/argparser.cpp	2006-10-19 04:37:31.000000000 -0400
+++ prt-get-5.15-sha256/src/argparser.cpp	2008-02-12 19:44:47.000000000 -0500
@@ -219,6 +219,10 @@ bool ArgParser::parse()
                 m_pkgmkArgs += " " + s;
             } else if ( s == "-um" ) {
                 m_pkgmkArgs += " " + s;
+            } else if ( s == "-is" ) {
+                m_pkgmkArgs += " " + s;
+            } else if ( s == "-us" ) {
+                m_pkgmkArgs += " " + s;
             } else if ( s == "-kw" ) {
                 m_pkgmkArgs += " " + s;
             } else if ( s == "-ns" ) {
diff -Nurp prt-get-5.15/src/prtget.cpp prt-get-5.15-sha256/src/prtget.cpp
--- prt-get-5.15/src/prtget.cpp	2006-10-19 04:37:31.000000000 -0400
+++ prt-get-5.15-sha256/src/prtget.cpp	2008-02-12 19:42:53.000000000 -0500
@@ -178,8 +178,8 @@ void PrtGet::printUsage()
     cout << "                -fr                 force rebuild" << endl;
     cout << "                -uf                 update footprint" << endl;
     cout << "                -if                 ignore footprint" << endl;
-    cout << "                -um                 update md5sum" << endl;
-    cout << "                -im                 ignore md5sum" << endl;
+    cout << "                -us,-um             update checksums" << endl;
+    cout << "                -is,-im             ignore checksums" << endl;
     cout << "                --margs=<string>    pass 'string' to pkgmk"
          << endl;
     cout << "                --aargs=<string>    pass 'string' to pkgadd"