# API reference Source: https://libtmux.org/en/erlang/latest/reference/ > Types, methods, and functions in libtmux for Erlang. Browse the Erlang types and operations for working with tmux. Start with the core objects below, or search for a type or member. Server 1 type [tmux_server](https://libtmux.org/en/erlang/latest/reference/tmux_server/) module 22 members Open tmux endpoints and execute explicit command values. Session 1 type [tmux_session](https://libtmux.org/en/erlang/latest/reference/tmux_session/) module 9 members Create and observe sessions, or act on a session's registered stable ID. Window 2 types [tmux_window](https://libtmux.org/en/erlang/latest/reference/tmux_window/) module 9 members Create physical windows in a session and act through their registered IDs. [tmux_window_link](https://libtmux.org/en/erlang/latest/reference/tmux_window_link/) module 10 members Act on a physical window's observed membership in a particular session. Pane 1 type [tmux_pane](https://libtmux.org/en/erlang/latest/reference/tmux_pane/) module 26 members Create, observe and rearrange panes using registered physical IDs. Hooks 1 type [tmux_hook](https://libtmux.org/en/erlang/latest/reference/tmux_hook/) module 10 members Store builtin hook commands and run them in an explicit observed context. Options 1 type [tmux_option](https://libtmux.org/en/erlang/latest/reference/tmux_option/) module 13 members Read and change explicit tmux option tables through registered references. Keys and bindings 1 type [tmux_key](https://libtmux.org/en/erlang/latest/reference/tmux_key/) module 10 members Register and remove bindings in explicit server key tables. Buffers 1 type [tmux_buffer](https://libtmux.org/en/erlang/latest/reference/tmux_buffer/) module 13 members Load, inspect and paste tmux byte buffers through an explicit endpoint. Terminal capabilities 1 type [tmux_capability](https://libtmux.org/en/erlang/latest/reference/tmux_capability/) module 8 members Look up source-derived native command declarations and feature minimums. Versions 1 type [tmux_version](https://libtmux.org/en/erlang/latest/reference/tmux_version/) module 4 members Parse the output of tmux -V without invoking tmux. Commands 3 types [tmux_command](https://libtmux.org/en/erlang/latest/reference/tmux_command/) module 16 members Build tmux commands and bounded sequences without performing I/O. [tmux_operation](https://libtmux.org/en/erlang/latest/reference/tmux_operation/) module 12 members Own a command independently of an individual wait. [tmux_scope](https://libtmux.org/en/erlang/latest/reference/tmux_scope/) module 4 members Run synchronous work and cleanup while preserving both outcomes. Control mode 1 type [tmux_control](https://libtmux.org/en/erlang/latest/reference/tmux_control/) module 6 members Own an explicit persistent tmux control attachment. Queries 6 types [tmux_filter](https://libtmux.org/en/erlang/latest/reference/tmux_filter/) module 14 members Construct portable conditions and prepare them against captured values. [tmux_json](https://libtmux.org/en/erlang/latest/reference/tmux_json/) module 1 member Decode bounded JSON using OTP's `json` parser and binary object keys. [tmux_matcher](https://libtmux.org/en/erlang/latest/reference/tmux_matcher/) module 1 member Prepare a trusted local predicate once for a captured snapshot. [tmux_query](https://libtmux.org/en/erlang/latest/reference/tmux_query/) module 17 members Build and execute explicit queries over the tmux graph. [tmux_schema](https://libtmux.org/en/erlang/latest/reference/tmux_schema/) module 12 members Validate schema-defined observations and normalize scalar values. [tmux_select](https://libtmux.org/en/erlang/latest/reference/tmux_select/) module 31 members Filter ordered captured rows without tmux I/O. Snapshots 3 types [tmux_identity](https://libtmux.org/en/erlang/latest/reference/tmux_identity/) module 5 members Observe a Linux process incarnation using its PID, boot ID and start ticks. [tmux_model](https://libtmux.org/en/erlang/latest/reference/tmux_model/) module 29 members Validated native domain records. Constructors perform no tmux I/O. [tmux_snapshot](https://libtmux.org/en/erlang/latest/reference/tmux_snapshot/) module 17 members Read an immutable captured graph without performing tmux I/O. Errors 1 type [tmux_error](https://libtmux.org/en/erlang/latest/reference/tmux_error/) module 1 member Explain library exceptions through Erlang's native error formatter.