Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The insert operation places a modification in the working memory."

A block of code is set as follows:

rule "Furnace_On"
when
Smoke_Sensor(value > 0) && Heat_Sensor(value > 0)
then
insert(Furnace_On())
end

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

rule "Furnace_On"
when
Smoke_Sensor(value > 0) && Heat_Sensor(value > 0)
then
insert(Furnace_On())
end

Any command-line input or output is written as follows:

aws greengrass create-function-definition --name "sensorDefinition"

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Internet Key Exchange (IKE) is the security protocol in IPsec."

Warnings or important notes appear like this.

Tips and tricks appear like this.