In Paper Mario: The Thousand-Year Door's root file structure, various misc textures is stored in root/e, with one subfolder.

The tpl format is a compressed file format that contains .tga files, which can be opened by most graphical editing programs.

root/e

root/e/$C

There are a total of four tpl files in the efolder's subfolder, which uses a country code.

effect.tpl

This tpl file holds a variety of textures, which includes number graphics, dialogue symbols, heart/starpower/flower point symbols, status effect graphics, and new area name label among other graphics.

effect_n64.tpl

Contains unused graphics, which is the Tubba Blubba's Heart texture from PM64.

effect_sys.tpl

This tpl file contains chapter emblem symbols, as well as the chapter start text (chapter, numbers, prologue)

effect_us.tpl

This tpl file contains only one graphic, and that is the “LEVEL” text.