15 files changed, 30 insertions, 14 deletions
diff --git a/CONTRIBUTING.markdown b/CONTRIBUTING.markdown
index e2192d88..18a5a5d7 100644
--- a/CONTRIBUTING.markdown
+++ b/CONTRIBUTING.markdown
@@ -52,6 +52,8 @@ languages:
 
 Other fields:
 
+- **category**: The category of the article. So far, can be one of *language*,
+  *tool* or *Algorithms & Data Structures*. Defaults to *language* if omitted.
 - **filename**: The filename for this article's code. It will be fetched, mashed
   together, and made downloadable.
     + For non-English articles, *filename* should   have a language-specific 
diff --git a/awk.html.markdown b/awk.html.markdown
index 3b6e34b4..1ef6b8d5 100644
--- a/awk.html.markdown
+++ b/awk.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: awk
+category: tool
+tool: awk
 filename: learnawk.awk
 contributors:
      - ["Marshall Mason", "http://github.com/marshallmason"]
diff --git a/cmake.html.markdown b/cmake.html.markdown
index c705beea..32a7b758 100644
--- a/cmake.html.markdown
+++ b/cmake.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: cmake
+category: tool
+tool: cmake
 contributors:
     - ["Bruno Alano", "https://github.com/brunoalano"]
 filename: CMake
diff --git a/de-de/make-de.html.markdown b/de-de/make-de.html.markdown
index bc5c7bcb..cf90dc29 100644
--- a/de-de/make-de.html.markdown
+++ b/de-de/make-de.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: make
+category: tool
+tool: make
 contributors:
     - ["Robert Steed", "https://github.com/robochat"]
     - ["Stephan Fuhrmann", "https://github.com/sfuhrm"]
diff --git a/es-es/awk-es.html.markdown b/es-es/awk-es.html.markdown
index 0516ea92..8da8f024 100644
--- a/es-es/awk-es.html.markdown
+++ b/es-es/awk-es.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: awk
+category: tool
+tool: awk
 filename: learnawk-es.awk
 contributors:
     - ["Marshall Mason", "http://github.com/marshallmason"]
diff --git a/es-es/pythonstatcomp-es.html.markdown b/es-es/pythonstatcomp-es.html.markdown
index 0130b72a..b3d2f0ff 100644
--- a/es-es/pythonstatcomp-es.html.markdown
+++ b/es-es/pythonstatcomp-es.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: Statistical computing with Python
+category: tool
+tool: Statistical Computing with Python
 contributors:
     - ["e99n09", "https://github.com/e99n09"]
 filename: pythonstatcomp-es.py
diff --git a/fr-fr/awk-fr.html.markdown b/fr-fr/awk-fr.html.markdown
index 750703f4..75c48811 100644
--- a/fr-fr/awk-fr.html.markdown
+++ b/fr-fr/awk-fr.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: awk
+category: tool
+tool: awk
 filename: learnawk-fr.awk
 contributors:
      - ["Marshall Mason", "http://github.com/marshallmason"]
diff --git a/fr-fr/make-fr.html.markdown b/fr-fr/make-fr.html.markdown
index 48d24549..7b4864b5 100644
--- a/fr-fr/make-fr.html.markdown
+++ b/fr-fr/make-fr.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: make
+category: tool
+tool: make
 contributors:
     - ["Robert Steed", "https://github.com/robochat"]
 translators:
diff --git a/make.html.markdown b/make.html.markdown
index 45d020e9..eecc96bf 100644
--- a/make.html.markdown
+++ b/make.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: make
+category: tool
+tool: make
 contributors:
     - ["Robert Steed", "https://github.com/robochat"]
     - ["Stephan Fuhrmann", "https://github.com/sfuhrm"]
diff --git a/pt-br/awk-pt.html.markdown b/pt-br/awk-pt.html.markdown
index 761f5294..9bf770fd 100644
--- a/pt-br/awk-pt.html.markdown
+++ b/pt-br/awk-pt.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: awk
+category: tool
+tool: awk
 filename: learnawk-pt.awk
 contributors:
     - ["Marshall Mason", "http://github.com/marshallmason"]
diff --git a/pt-br/cmake-pt.html.markdown b/pt-br/cmake-pt.html.markdown
index 8d4c3fda..d11fe4f4 100644
--- a/pt-br/cmake-pt.html.markdown
+++ b/pt-br/cmake-pt.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: cmake
+category: tool
+tool: cmake
 contributors:
     - ["Bruno Alano", "https://github.com/brunoalano"]
 filename: CMake-br
diff --git a/pt-br/make-pt.html.markdown b/pt-br/make-pt.html.markdown
index 8e7603cc..cbdebde7 100644
--- a/pt-br/make-pt.html.markdown
+++ b/pt-br/make-pt.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: make
+category: tool
+tool: make
 contributors:
     - ["Robert Steed", "https://github.com/robochat"]
     - ["Stephan Fuhrmann", "https://github.com/sfuhrm"]
diff --git a/tcsh.html.markdown b/tcsh.html.markdown
index 80411ea6..e38b7a27 100644
--- a/tcsh.html.markdown
+++ b/tcsh.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: tcsh
+category: tool
+tool: tcsh
 filename: LearnTCSH.csh
 contributors:
        - ["Nicholas Christopoulos", "https://github.com/nereusx"]
diff --git a/zh-cn/awk-cn.html.markdown b/zh-cn/awk-cn.html.markdown
index 3fea782b..8ee2db2c 100644
--- a/zh-cn/awk-cn.html.markdown
+++ b/zh-cn/awk-cn.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: awk
+category: tool
+tool: awk
 contributors:
      - ["Marshall Mason", "http://github.com/marshallmason"]
 translators:
diff --git a/zh-cn/make-cn.html.markdown b/zh-cn/make-cn.html.markdown
index 4cdf1e63..281537d6 100644
--- a/zh-cn/make-cn.html.markdown
+++ b/zh-cn/make-cn.html.markdown
@@ -1,5 +1,6 @@
 ---
-language: make
+category: tool
+tool: make
 contributors:
 - ["Robert Steed", "https://github.com/robochat"]
 - ["Jichao Ouyang", "https://github.com/jcouyang"]