Here are the data structures with brief descriptions:

[detail level 1234]

ca
dss
dacs
DACSAUTH
DACSCHECK
_ftsent
Acl_file
Acl_index
Acl_map
Acl_rule
Acl_url_match
Acs_activity
Acs_allow_result
Acs_deny_result
Acs_environment
Acs_error_handler
Acs_expr_ns_arg
Acs_result
Acs_token
Alist
Allow
AppliesToEndpoint
Arglist
AssignToken
Atexit_entry
AttrTypeAndValue
Auth_args
Auth_conf
Auth_error_handler
Auth_grid
Auth_grid_coord
Auth_hotp_param
Auth_module
Auth_module_desc
Auth_module_info
Auth_out
Auth_password_audit
Auth_prompt
Auth_prompts
Auth_reply
Auth_reply_failed
Auth_reply_ok
Auth_state
Auth_style_map
Auth_success_handler
Auth_token
Auth_token_param
Auth_totp_param
Ava
Bstring
Cargs
Cas_auth
Castname_map
CGI_input
CGI_options
Cipher_handle
CLASS
CmdFlags
Command
Commands
Common_status
Completions
Conf_eval_arg
Conf_res
Configuration
Cookie
Cookie_name
Cred_auth_url
Cred_cache
Credentials
Crypt_keys
DACS_acs_args
DACS_app_args
DACS_app_type_name_map
dacs_buf_config
DACS_conf
dacs_dir_config
DACS_name
dacs_server_config
Deny
Directive_tab
Directory_list
Dotdot
Ds
Ds_stream
Dsio
Dsvec
Email_command_arg
Email_dkim
Email_header
Email_mailer
Email_message
Emit_format_tab
Entity_body
Expr_result
Federation
Federation_res
Fm_mem_funcs_dataptr
Fm_mem_funcs_standard
Fm_mem_src
Frame
Frame_stats
FTS
Func_desc
Func_info
Grant_attrs
Group_add_delete
Group_definition
Group_delete_member
Group_deltas
Group_file
Group_member
Group_meta_update
Group_name
Group_name_list
Groups
Handle
Hmac_digest
Hmac_handle
Hmac_vec
Hotp_test
Html_cell
Html_cell_desc
Html_header_conf
Html_table
Http
Http_auth
Http_auth_authorization
Http_auth_match
Http_auth_www_authenticate
Http_params
Http_version
Ic_auth
Ic_claim_parse
Ic_config
Ic_entry
Ic_token
Icx_card_defs
Icx_claim
Icx_context_t
Icx_time_conditions
Identity
Interpolation_component
Interpolation_range
IO_state
Jurisdiction
Jurisdiction_conf
Jurisdiction_res
Kwv
Kwv_conf
Kwv_iter
Kwv_pair
Kwv_parse_conf
Kwv_var
Kwv_vartab
Kwv_xml
Level_map
Lex_state
Lex_token
List
Log_desc
Log_event
Log_filter
Log_filter_parse
Log_output
Log_source_flag_map
Lvalue
mallinfo
malloc_chunk
malloc_state
MEM_ALIGNMENT_TYPE
MemBlockHeader
MemChunk
MemChunkAlloc
MemHeader
Mic_entry
Mic_sts_auth
Mic_use_mode_table
Mime
Mime_content_disposition
Mime_content_type
Mime_desc
Mime_file_type
Mime_header
mime_header_tab
Mime_parameter
Mime_part
Mkargv
must_b64_encode_s
Nat
Optab
outf
Pam_auth_tid
Parse_attr_ctl
Parse_attr_tab
Parse_attr_validate
Parse_xml_acs_state
Parse_xml_attributes
Parse_xml_auth_reply_state
Parse_xml_conf_state
Parse_xml_error
Parse_xml_group_deltas_state
Parse_xml_groups_state
Parse_xml_node
Parse_xml_node_attr
Parse_xml_roles_reply_state
Parse_xml_scredentials_state
Passwd_alg_map
pgfree
pginfo
PKI_session_keys
Precondition
Predicate
Proc_lock
Proxy
Pw_constraints
Pw_entry
Range_syntax
Register_args
Revocation
Rlink
Rlink_user
Rng_state
Roles_conf
Roles_list
Roles_module
Roles_module_desc
Roles_module_info
Roles_reply
Roles_reply_failed
Roles_reply_ok
Root_res
Rule
Sched
Scredentials
Scredentials_selected
Scredentials_unauth
Search_word
Segment
Select_arg
Service
Service_ref
Services
Sic_entry
Signout_handler
Simple_user
Site
Ssl_conf
Ssl_global_conf
Ssl_peer_match
State_desc
STR
Str_test_parse
Strfields
Strnum_tab
Strpack
Strsubst
Strtable
Strtable_row_sort
Strtr_io
Strtr_state
Sts_request
Test_data
Totp_test
Transfer_conf
Transform_config
Transform_stack
Typename_map
Uri
Uri_pattern
Uri_pattern_test
Uri_query_arg
Url_auth
User
User_access
User_auth
User_expr
User_info
User_list
User_signout
User_token
Value
Var
Var2
Var_ns
Var_ref
Vfs_conf
Vfs_def
Vfs_directive
Vfs_handle
Vfs_op_tab
Vfs_switch