diff --git a/Completeness-CategoryIO.md b/Completeness-CategoryIO.md
new file mode 100644
index 0000000..5b0dbcb
--- /dev/null
+++ b/Completeness-CategoryIO.md
@@ -0,0 +1,27 @@
+# File I/O Abstraction
+
+| ☑ | Function                       | libSDLpp method(s) / Notes |
+|:-:|--------------------------------|----------------------------|
+| ☑ | SDL_AllocRW                    | RWops::RWops(CustomRWops) |
+| ☑ | SDL_FreeRW                     | RWops::~RWops() |
+| ☑ | SDL_RWFromConstMem             | RWops::FromConstMem() |
+| ☑ | SDL_RWFromFP                   | RWops::FromFPMem() |
+| ☑ | SDL_RWFromFile                 | RWops::FromFile() |
+| ☑ | SDL_RWFromMem                  | RWops::FromMem() |
+| ☑ | SDL_RWclose                    | RWops::Close() |
+| ☑ | SDL_RWread                     | RWops::Read() |
+| ☑ | SDL_RWseek                     | RWops::Seek() |
+| ☑ | SDL_RWtell                     | RWops::Tell() |
+| ☑ | SDL_RWwrite                    | RWops::Write() |
+| ☐ | SDL_ReadBE16                   | |
+| ☐ | SDL_ReadBE32                   | |
+| ☐ | SDL_ReadBE64                   | |
+| ☐ | SDL_ReadLE16                   | |
+| ☐ | SDL_ReadLE32                   | |
+| ☐ | SDL_ReadLE64                   | |
+| ☐ | SDL_WriteBE16                  | |
+| ☐ | SDL_WriteBE32                  | |
+| ☐ | SDL_WriteBE64                  | |
+| ☐ | SDL_WriteLE16                  | |
+| ☐ | SDL_WriteLE32                  | |
+| ☐ | SDL_WriteLE64                  | |
diff --git a/Completeness.md b/Completeness.md
index d291f28..bbbe6ee 100644
--- a/Completeness.md
+++ b/Completeness.md
@@ -24,6 +24,8 @@ Note that it's always possible to use native SDL2 functions with SDL2pp, as all
 
 ## File Abstraction
 
+- [[File I/O Abstraction|Completeness/CategoryIO]]
+
 ## Shared Object Support
 
 ## Platform and CPU Information