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Fix grammar error and Increase readability interpreters.md

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docs/manual/interpreters.md
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@ -20,45 +20,50 @@ limitations under the License.
{% include JB/setup %}
## Interpreters in zeppelin
## Interpreters in Zeppelin
In this section, we will explain about the role of interpreters, interpreters group and interpreter settings in Zeppelin.
The concept of Zeppelin interpreter allows any language/data-processing-backend to be plugged into Zeppelin.
Currently, Zeppelin supports many interpreters such as Scala( with Apache Spark ), Python( with Apache Spark ), SparkSQL, Hive, Markdown, Shell and so on.
This section explain the role of Interpreters, interpreters group and interpreters settings in Zeppelin.
Zeppelin interpreter concept allows any language/data-processing-backend to be plugged into Zeppelin.
Currently Zeppelin supports many interpreters such as Scala(with Apache Spark), Python(with Apache Spark), SparkSQL, Hive, Markdown and Shell.
<br/>
## What is Zeppelin interpreter?
### What is zeppelin interpreter?
Zeppelin Interpreter is a plug-in which enables Zeppelin users to use a specific language/data-processing-backend. For example, to use scala code in Zeppelin, you need `%spark` interpreter.
Zeppelin Interpreter is the plug-in which enable zeppelin user to use a specific language/data-processing-backend. For example to use scala code in Zeppelin, you need ```spark``` interpreter.
When you click on the ```+Create``` button in the interpreter page the interpreter drop-down list box will present all the available interpreters on your server.
When you click the ```+Create``` button in the interpreter page, the interpreter drop-down list box will show all the available interpreters on your server.
<img src="/assets/themes/zeppelin/img/screenshots/interpreter_create.png">
### What is zeppelin interpreter setting?
<br/>
## What is Zeppelin Interpreter Setting?
Zeppelin interpreter setting is the configuration of a given interpreter on zeppelin server. For example, the properties requried for hive JDBC interpreter to connect to the Hive server.
Zeppelin interpreter setting is the configuration of a given interpreter on Zeppelin server. For example, the properties are required for hive JDBC interpreter to connect to the Hive server.
<img src="/assets/themes/zeppelin/img/screenshots/interpreter_setting.png">
### What is zeppelin interpreter group?
Every Interpreter belongs to an InterpreterGroup. InterpreterGroup is a unit of start/stop interpreter.
By default, every interpreter belong to a single group but the group might contain more interpreters. For example, spark interpreter group include spark support, pySpark,
<br/>
## What is Zeppelin Interpreter Group?
Every Interpreter is belonged to an **Interpreter Group**. Interpreter Group is a unit of start/stop interpreter.
By default, every interpreter is belonged to a single group, but the group might contain more interpreters. For example, spark interpreter group is including Spark support, pySpark,
SparkSQL and the dependency loader.
Technically, Zeppelin interpreters from the same group are running in the same JVM.
Technically, Zeppelin interpreters from the same group are running in the same JVM. For more information about this, please checkout [here](../development/writingzeppelininterpreter.md).
Interpreters belong to a single group a registered together and all of their properties are listed in the interpreter setting.
Each interpreters is belonged to a single group and registered together. All of their properties are listed in the interpreter setting like below image.
<img src="/assets/themes/zeppelin/img/screenshots/interpreter_setting_spark.png">
### Programming langages for interpreter
<br/>
## Programming Languages for Interpreter
If the interpreter uses a specific programming language (like Scala, Python, SQL), it is generally a good idea to add syntax highlighting support for that to the notebook paragraph editor.
If the interpreter uses a specific programming language ( like Scala, Python, SQL ), it is generally recommended to add a syntax highlighting supported for that to the notebook paragraph editor.
To check out the list of languages supported, see the mode-*.js files under zeppelin-web/bower_components/ace-builds/src-noconflict or from github https://github.com/ajaxorg/ace-builds/tree/master/src-noconflict
To check out the list of languages supported, see the `mode-*.js` files under `zeppelin-web/bower_components/ace-builds/src-noconflict` or from [github.com/ajaxorg/ace-builds](https://github.com/ajaxorg/ace-builds/tree/master/src-noconflict).
To add a new set of syntax highlighting,
1. add the mode-*.js file to zeppelin-web/bower.json (when built, zeppelin-web/src/index.html will be changed automatically)
2. add to the list of `editorMode` in zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js - it follows the pattern 'ace/mode/x' where x is the name
3. add to the code that checks for `%` prefix and calls `session.setMode(editorMode.x)` in `setParagraphMode` in zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js
If you want to add a new set of syntax highlighting,
1. Add the `mode-*.js` file to `zeppelin-web/bower.json` ( when built, `zeppelin-web/src/index.html` will be changed automatically. ).
2. Add to the list of `editorMode` in `zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js` - it follows the pattern 'ace/mode/x' where x is the name.
3. Add to the code that checks for `%` prefix and calls `session.setMode(editorMode.x)` in `setParagraphMode` located in `zeppelin-web/src/app/notebook/paragraph/paragraph.controller.js`.