Essentially,the jerez90 is a gp2 conversion,the difference with jerez97 is not in terms of trackside graphics,but the layout.
From 86-90,there was no chicane.The turn was called curva alex criville.
Post 90s,the chicane named after senna was introduced and that is why we have 2 layouts of jerez.
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en.wikipedia.org]
off topic-I wish that f1 would return to jerez,the 1997 european gp was one of the best races i've seen in my life.
Kimi forever!