diff --git a/Completeness-CategoryIO.md b/Completeness-CategoryIO.md
index 5b0dbcb..f3abd01 100644
--- a/Completeness-CategoryIO.md
+++ b/Completeness-CategoryIO.md
@@ -13,15 +13,15 @@
 | ☑ | 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                  | |
+| ☑ | SDL_ReadBE16                   | RWops::ReadBE16() |
+| ☑ | SDL_ReadBE32                   | RWops::ReadBE32() |
+| ☑ | SDL_ReadBE64                   | RWops::ReadBE64() |
+| ☑ | SDL_ReadLE16                   | RWops::ReadLE16() |
+| ☑ | SDL_ReadLE32                   | RWops::ReadLE32() |
+| ☑ | SDL_ReadLE64                   | RWops::ReadLE64() |
+| ☑ | SDL_WriteBE16                  | RWops::WriteBE16() |
+| ☑ | SDL_WriteBE32                  | RWops::WriteBE32() |
+| ☑ | SDL_WriteBE64                  | RWops::WriteBE64() |
+| ☑ | SDL_WriteLE16                  | RWops::WriteLE16() |
+| ☑ | SDL_WriteLE32                  | RWops::WriteLE32() |
+| ☑ | SDL_WriteLE64                  | RWops::WriteLE64() |