diff --git a/packages/python/yap_kernel/README.md b/packages/python/yap_kernel/README.md
index 9744da286..1878553e9 100644
--- a/packages/python/yap_kernel/README.md
+++ b/packages/python/yap_kernel/README.md
@@ -1,39 +1,48 @@
-# IPython Kernel for Jupyter
+#YAP Kernel for Jupyter
 
 This package provides the IPython kernel for Jupyter.
 
 ## Installation from source
 
-1. `git clone`
-2. `cd ipykernel`
-3. `pip install -e .`
+This should install as part of the YAP system
 
-After that, all normal `ipython` commands will use this newly-installed version of the kernel.
+## Jupyter Lab
 
-## Running tests
+CodeMirror does not support highlighting for Prolog. YAP includes a
+port based on one that is used in SWISH. To use this mode from
+jupyter lab, do as follows:
 
-Ensure you have `nosetests` and the `nose-warnings-filters` plugin installed with
+1. run `jupyter lab build` (you may need root permission). Search the
+output for a aline such as:
 
-```bash
-pip install nose nose-warnings-filters
-```
+~~~~
+[LabBuildApp] > node /usr/local/lib/python3.7/site-packages/jupyterlab/staging/yarn.js install
+~~~~
 
-and then from the root directory
+2, Add the following 3 lines below to the webpack.config.js file:
 
-```bash
-nosetests ipykernel
-```
+~~~~~~~
+fs.ensureDirSync('node_modules/codemirror/mode/prolog');
+fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/prolog.js'), 'node_modules/codemirror/mode/prolog/prolog.js');
+fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/meta.js'), 'node_modules/codemirror/mode/meta.js');
+~~~~~~~~
+These lines should copy YAP's prolog.js and a new version of the mode directory, meta.js. whenever you rebuild jlab, eg, if you add a new plugin.
 
-## Running tests with coverage
+Next, please check the lines in context.
 
-Follow the instructions from `Running tests`. Ensure you have the `coverage` module installed with
+be at around line 24:
 
-```bash
-pip install coverage
-```
+~~~~~~~
+  output: jlab.outputDir
+});
 
-and then from the root directory
+fs.ensureDirSync('node_modules/codemirror/mode/prolog');
+fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/prolog.js'), 'node_modules/codemirror/mode/prolog/prolog.js');
+fs.copySync(path.join(path.resolve(jlab.buildDir),'../../../kernels/yap_kernel/meta.js'), 'node_modules/codemirror/mode/meta.js');
+
+// Create the entry point file.
+var source = fs.readFileSync('index.js').toString();
+~~~~~~~~
+
+3: Rerun "jupyter lab build"
 
-```bash
-nosetests --with-coverage --cover-package ipykernel ipykernel
-```