1 webOS doctor will only restore your device back to factory settings. (if something were to screw your device up, or as a last ditch effort to start over again fresh or brick your phone. Doctor will revive your phone 99.9% of the time.) There is a preware app called save restore that will back you up, and backup app data. The backup feature in your settings will also backup your stuff as well, but save restore app will let you transfer your stuff to a alternate USB or computer.
2 I do not believe there is an app for retrieving old dismissed notifications. (not 100% sure on that one)
3 there are numerous patches like that and its mainly up for you to decide what works best in your particular likings and what seems to suit your device.
4 you can search preware in your just type bar, you just need to select the just type search option, touch your just type then in the upper left bring down the just type preferences, scroll down some and you shall see the options to select where you want just type to do searches. (some apps and websites will offer you this option as well as you come to the websites or install the apps that have that feature in them.
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