This procedure is defined in the server but not documented via ad_proc or proc_doc and may be intended as a private interface.
The procedure is defined as:
proc ::xotcl::info_forward_options {list} { set result [list] set i 0 for {set i 0} {$i < [llength $list]} {incr i} { switch -glob -- [lindex $list $i] { -frame { lappend result -objscope incr i } -prefix { lappend result -methodprefix incr i lappend result [lindex $list $i] } -* {lappend result [lindex $list $i]} default { lappend result {*}[lrange $list $i end] break } } } return $result }