using Test
using Pkg; 
using REPLHistory

history(12)                                                                                              
using REPLHistory                                 
ab = "ααα"                                                                                                                                                       
∇ϕ(x) = grad(x)                                                                                                                                                   
ab = "2343511ω" * "ααα"
history()                                                                                                                                                 
print(history())                                                                                                                                               
using REPLHistory
print(history())                                                                                                                                  
ab = "ααα"                                                                                                                                                          
∇ϕ(x) = grad(x)                                                                                                                                                   
ab = "ααα"    
print(history()) 


