updates of popover texts for specific SSI-capabilities

docs/terms/holder.md

@@ -5,7 +5,7 @@ scopeid: essifLab
 type: concept
 typeid: holder
 stage: draft
-hoverText: "Holder: a functional component that is capable of "
+hoverText: "Holder (functional component): the capability to handle presentation requests from a peer-agent, produce the requested data (a presentation) according to its principal's holder-policy, and send that in response to the request."
 ---
 
 ## Short Description

docs/terms/issuer.md

@@ -5,7 +5,7 @@ scopeid: essifLab
 type: concept
 typeid: issuer
 stage: draft
-hoverText: "Issuer: a functional component that is capable of "
+hoverText: "Issuer (functional component): the capability to construct credentials from data objects, according to the rules of its principal's issuer-policy (specifically regarding the way in which the credential is to be digitally signed), and pass it to the wallet-component of its principal allowing it to be issued."
 ---
 
 ## Short Description

docs/terms/verifier.md

@@ -5,7 +5,7 @@ scopeid: essifLab
 type: concept
 typeid: verifier
 stage: draft
-hoverText: "Verifier: a functional component that is capable of "
+hoverText: "Verifier (functional component): the capability to request peer-agents to present (provide) data from credentials (of a specified kind, issued by specified parties), and to verify such responses (check structure, signatures, dates), according to its principal's verifier-policy."
 ---
 
 ## Short Description

docs/terms/wallet.md

@@ -5,7 +5,7 @@ scopeid: essifLab
 type: concept
 typeid: wallet
 stage: draft
-hoverText: "Wallet: a functional component that is capable of "
+hoverText: "Wallet (functional component): the capability to securely store data as requested by colleague-agents, and to provide stored data to colleague-agents or peer-agents, all in compliance with the rules of the wallet-policy of its principal."
 ---
 
 ## Short Description