diff --git a/FileTreeDocumentation.md b/FileTreeDocumentation.md
index cf5ac150..d8b071f0 100644
--- a/FileTreeDocumentation.md
+++ b/FileTreeDocumentation.md
@@ -1,8 +1,8 @@
-This wiki page documents the file tree for a source installation of go1.9.2 to which have been added the github.com/golang blog, net and tools sub-repositories, and the github.com/gonum/gonum repository. It is somewhat consistent with the file tree of the golang.org/dl pre-compiled downloads for GNU/Linux. It presumes the reader is familiar with utilisation of $GOPATH on Un*x as a colon-separated string; GNU/Linux being a multi-user OS the added sub-repositories and repository are located in $HOME/go and /usr/share/gocode.
+This page documents the file tree for a source installation of go1.13.1.
```
-% tree -d -L 2 /usr/lib/go1.9.2 | head
-/usr/lib/go1.9.2
+$ tree -d -L 2 /usr/lib/go1.13.1 | head
+/usr/lib/go1.13.1
`-- go
|-- api
|-- bin
@@ -12,26 +12,27 @@ This wiki page documents the file tree for a source installation of go1.9.2 to w
|-- pkg
|-- src
`-- test
-%
+$
```
api contains data for Go's API checker
```
-% ls $GOROOT/api
-README go1.1.txt go1.3.txt go1.5.txt go1.7.txt go1.9.txt next.txt
-except.txt go1.2.txt go1.4.txt go1.6.txt go1.8.txt go1.txt
-%
+$ ls $GOROOT/api
+README go1.10.txt go1.13.txt go1.4.txt go1.7.txt go1.txt
+except.txt go1.11.txt go1.2.txt go1.5.txt go1.8.txt next.txt
+go1.1.txt go1.12.txt go1.3.txt go1.6.txt go1.9.txt
+$
```
bin contains the go and gofmt executables
```
-% ls -l $GOROOT/bin
-total 7588
--rwxr-xr-x 1 root root 5918348 Oct 31 16:06 go
--rwxr-xr-x 1 root root 1831140 Oct 31 16:06 gofmt
-%
+$ ls -l $GOROOT/bin
+total 11576
+-rwxr-xr-x 1 root root 9652760 Oct 2 03:02 go
+-rwxr-xr-x 1 root root 2197756 Oct 2 03:02 gofmt
+$
```
doc contains .css, .go, .html, .js, and .png files
@@ -39,89 +40,46 @@ doc contains .css, .go, .html, .js, and .png files
lib contains the compressed time zone database
```
-% tree $GOROOT/lib | head -n 5
-/usr/lib/go1.9.2/go/lib
+$ tree $GOROOT/lib | head -n 5
+/usr/lib/go1.13.1/go/lib
`-- time
-|-- README
-|-- update.bash
-`-- zoneinfo.zip
-%
+ |-- README
+ |-- update.bash
+ `-- zoneinfo.zip
+$
```
-misc/android contains information on development for android
-misc/arm contains a script for executing go binaries on android
-misc/cgo contains tests and examples of cgo
-misc/chrome contains a Chrome extension
-misc/git contains a pre-commit hook
-misc/ios contains information on cross compiling for iOS
-misc/linkcheck contains a program checking links on the godoc website
-misc/nacl contains Go's integration with nacl, used by the Go playground
-misc/sortac contains a utility for sorting the AUTHORS and CONTRIBUTORS files
-misc/swig contains examples of using Go with SWIG
-misc/trace contains a generated file used by go tool trace
+misc contains files pertaining to specific build modes and platforms
```
-% tree -d -L 1 $GOROOT/misc | head -n 12
-/usr/lib/go1.9.2/go/misc
+$ tree -d -L 1 $GOROOT/misc | head -n 12
+/usr/lib/go1.13.1/go/misc
|-- android
|-- arm
|-- cgo
|-- chrome
-|-- git
|-- ios
|-- linkcheck
|-- nacl
-|-- sortac
+|-- reboot
|-- swig
-`-- trace
-%
+|-- trace
+`-- wasm
+$
```
pkg contains libs, header files, compiled object files, and executables
```
-% tree -d -L 1 $GOROOT/pkg | head -n 7
-/usr/lib/go1.9.2/go/pkg
-|-- bootstrap
+$ tree -d -L 1 $GOROOT/pkg | head -n 6
+/usr/lib/go1.13.1/go/pkg
|-- include
|-- linux_386
|-- linux_386_dynlink
|-- obj
`-- tool
-%
+$
```
+src contains the go1.13.1 source code
-test contains tests of the Go tool chain and runtime
-
-The github.com/golang net and tools sub-repositories and github.com/gonum/gonum repository can be located in /usr/share/gocode, utilising the following commands.
-
-```
-% su -c tcsh
-Password:
-# setenv GOPATH /usr/share/gocode
-# go get -u golang.org/x/tools/...
-# go get -u gonum.org/v1/gonum/...
-# find $GOPATH -print0 | xargs -0 file | grep "executable" | grep ELF \
-? | cut -f 1 -d : | xargs strip --strip-unneeded
-# exit
-%
-```
-
-To compile Go code with the libraries in /usr/share/gocode you must add the location to $GOPATH.
-
-```
-% setenv GOPATH $HOME/go:/usr/share/gocode
-% go get -u golang.org/x/blog
-package golang.org/x/blog: no Go files in /home/eric/go/src/golang.org/x/blog
-% cd go/src/golang.org/x/blog/blog
-% go build
-% mv blog $HOME/go/bin
-%
-```
-
-This page utilises the C shell as [SettingGOPATH](https://github.com/golang/go/wiki/SettingGOPATH) doesn't include that shell.
-
-For information on running the blog server see [Go Blog](https://github.com/golang/blog); those instructions might be more comprehensive being edited, but for Un*x just omit the .exe
-file extension.
-
-See also: [Modules](https://github.com/golang/go/wiki/modules)
\ No newline at end of file
+test contains tests of the Go toolchain and runtime
\ No newline at end of file