https://cordova.apache.org/docs/en/9.x/guide/platforms/ios/plugin.html

• https://cordova.apache.org/docs/en/9.x/guide/platforms/ios/plugin.html#plugin-class-mapping What does "as described in Plugin Development Guide" refer to? Better link?
• https://cordova.apache.org/docs/en/9.x/guide/platforms/ios/plugin.html#writing-an-ios-cordova-plugin Last sentence "For more details see..." Details on what exactly? How do these links help me with what?
• "described in Application Plugins" What does this refer to?
• https://cordova.apache.org/docs/en/9.x/guide/platforms/ios/plugin.html#echo-ios-plugin-example
  • "Then we would add the following Echo.h and Echo.m files to the Plugins folder within the Cordova-iOS application directory:" What does "Cordova-iOS application directory" mean here?
  • The code block seems to contain those both files, why not just list them separately?
• https://cordova.apache.org/docs/en/9.x/guide/platforms/ios/plugin.html#ios-integration " See the CDVPlugin.h and CDVPlugin.m classes for guidance." Guidance for what? What other methods there are? When should I look at those files?