add metadata text

docs/pages/detailed_instructions/metadata.md

@@ -4,3 +4,20 @@ layout: default
 nav_order: 1
 parent: Detailed Instructions
 ---
+
+### Metadata
+In order to register the workflow in the PMD workflow store, the file `meta.json` is required. The file includes the essential metadata. The keys and their possible values are listed in the following table:
+
+| Key | Requirement | Description|
+|-----|------------|------------|
+| title | Mandatory | the Label of the workflow |
+| workflow_environment | Mandatory | pyiron or SimStack |
+| description | Mandatory | the description of the workflow |
+| authors | Mandatory | a list of authors' names and optional their email addresses e.g. ["Author One <[email protected]>", "Author Two <[email protected]>"] |
+| release | Mandatory | version information of the release |
+| keywords | Mandatory | a list of keywords for the workflow (From a list of available keywords, making it possible to be queried via Ontology) |
+| categories | Optional | a list of categories, e.g., atomistics, continuum, experimental|
+| steps/codes | Optional | a list of steps/codes, e.g., LAMMPS, DAMASK, calculation of elastic modulus|
+| licenses | Optional | a dictionary where the keys are the packages used in the workflow and the values are the corresponding license type. <br> e.g. 'pyiron':'BSD-3' |
+| publications | Optional | a list of publications |
+| logo | Optional | path to the logo of the workflow within the repository|

docs/pages/index.md

@@ -7,7 +7,6 @@ nav_order: 1
 
 # How do I upload to the Workflow Store?
 
-[toc]
 
 ## Introduction