# @USAGE: <DEPEND ATOM>
# @DESCRIPTION:
# Return true if given package is installed. Otherwise return false.
-# Callers may override the ROOT variable in order match packages from an
+# Callers may override the ROOT variable in order to match packages from an
# alternative ROOT.
has_version() {
# @USAGE: <DEPEND ATOM>
# @DESCRIPTION:
# Returns the best/most-current match.
-# Callers may override the ROOT variable in order match packages from an
+# Callers may override the ROOT variable in order to match packages from an
# alternative ROOT.
best_version() {