diff --git a/src/report.cpp b/src/report.cpp
index 20592718e..72a3afe73 100644
--- a/src/report.cpp
+++ b/src/report.cpp
@@ -243,6 +243,21 @@ std::string longUsage ()
       << "  bg:                Background color"                              << "\n"
       << "  limit:             Desired number of rows in report"              << "\n"
       <<                                                                         "\n"
+      << "Attribute modifiers improve filters.  Supported modifiers are:"     << "\n"
+      << "  before     (synonyms under, below)"                               << "\n"
+      << "  after      (synonyms over, above)"                                << "\n"
+      << "  none"                                                             << "\n"
+      << "  any"                                                              << "\n"
+      << "  is         (synonym equals)"                                      << "\n"
+      << "  isnt       (synonym not)"                                         << "\n"
+      << "  has        (synonym contain)"                                     << "\n"
+      << "  hasnt"                                                            << "\n"
+      << "  startswith (synonym left)"                                        << "\n"
+      << "  endswith   (synonym right)"                                       << "\n"
+      <<                                                                         "\n"
+      << "  For example:"                                                     << "\n"
+      << "    task list due.before:eom priority.not:L"                        << "\n"
+      <<                                                                         "\n"
       << "The default .taskrc file can be overridden with:"                   << "\n"
       << "  task rc:<alternate file> ..."                                     << "\n"
       <<                                                                         "\n"