Task Rebuild -Depends Clean, Build  {
   "Rebuild"
 }

Task Build {
   "Build"
 }

Task Clean {
   "Clean"
 }

Task default -Depends Build

# Will display task as:
# -------- Rebuild --------
# -------- Build --------
FormatTaskName "-------- {0} --------"  

# will display tasks in yellow colour:
# Running Rebuild  
FormatTaskName {
    param($taskName)
    "Running $taskName" - foregroundcolor yellow
}

Task Rebuild -Depends Clean, Build  {
   "Rebuild"
 }

Task Build {
   "Build"
 }

Task Clean {
   "Clean"
 }

Task default -Depends Build

propreties { 
    $isOk = $false
}

# By default the Build task won't run, unless there is a param $true
Task Build -precondition { return $isOk } {
   "Build"
 }

Task Clean {
   "Clean"
 }

Task default -Depends Build

Task Build -depends Clean {
   "Build"
 }

Task Clean -ContinueOnError {
   "Clean"
    throw "throw on purpose, but the task will continue to run"
 }

Task default -Depends Build