diff --git a/doc/efun/struct_info b/doc/efun/struct_info
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+++ b/doc/efun/struct_info
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+SYNOPSIS
+        #include <struct_info.h>
+        #include <lpctypes.h>
+
+        mixed * struct_info (struct st, int what)
+
+DESCRIPTION
+        Return information about the structure of struct <st> in an array.
+        If <st> has a base struct, <what> determines how the information
+        is returned:
+
+        <what> == SINFO_FLAT:
+            All members of <st>, including those inherited from the base
+            struct, are returned on the top level of the result.
+            The base struct is signified by just its name.
+
+        <what> == SINFO_NESTED:
+            Only the members defined in <st> itself are returned on
+            the top level of the result. The information for the base
+            struct is a array by itself, as it would be returned
+            by a call to struct_info() for a base struct instance.
+
+        The elements in the resulting array are:
+
+          string [SI_NAME]:        the name of the struct
+          string [SI_PROG_NAME]:   the name of program defining the struct
+          string [SI_PROG_ID]:     the id of the program defining the struct
+          mixed  [SI_BASE]:        0, or the base struct information
+          mixed* [SI_MEMBER+0]:    the first member information
+          mixed* [SI_MEMBER+n]:    the last member information
+
+        The member information entries are arrays themselves with
+        these elements:
+
+          string [SIM_NAME]:  name of the member
+          int    [SIM_TYPE]:  the type of the member (compile-time value)
+          string [SIM_EXTRA]: 0, or if the member is a struct, the
+                              struct name
+
+HISTORY
+        Introduced in LDMud 3.3.344.
+        LDMud 3.3.417 introduced SI_PROG_NAME and SI_PROG_ID in exchange
+          for SI_UNIQUE_NAME.
+
+SEE ALSO
+        structs(LPC)