diff --git a/README.md b/README.md
index f710751..acf588b 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,21 @@
+> **Note**
+> 
+> This program expects that your Gopher server treats **empty lines** as **information lines**.
+> 
+> It also expects the server to **add the hostname** and the **port** number at the end of links.
 
 ### Compiling
 
-This program compiles like any other ordinary Go project, simply **run** `go build .` in the project directory.
+You need to have Go toolchain installed:
+```shell
+# Debian
+sudo apt install golang
+
+# Fedora
+sudo dnf install golang
+```
+
+Then, just **clone the repo** and run **`go build .`** to compile an executable.
 
 ### Usage
 ```shell
diff --git a/gopherType.go b/gopherType.go
index 884502c..c6cd686 100644
--- a/gopherType.go
+++ b/gopherType.go
@@ -90,14 +90,8 @@ func (params *GopherTypeCharParams) GopherTypeChar(path string, isDir bool) stri
 			return "I"
 		case strings.HasPrefix(mimeType, "audio/"):
 			return "s"
-		case mimeType == "application/pdf":
-			return "P"
 		case strings.HasPrefix(mimeType, "text/html"):
 			return "h"
-		case strings.HasPrefix(mimeType, "text/rtf"):
-			return "r"
-		case strings.HasPrefix(mimeType, "text/xml") || strings.HasPrefix(mimeType, "application/xml"):
-			return "X"
 		default:
 			return "9"
 	}